[css-contain-1] markup tweak to align hyphenation of terminology with L2

No changes to the text are visible, except in the index of terms defined
by this specificaiton

Author: frivoal

css-contain-1/Overview.bs

@@ -389,7 +389,7 @@ Size Containment</h3>
 	or a <a spec="css-display-3" lt="atomic inline">non-atomic</a> <a spec="css-display-3">inline-level</a> box,
 	size containment has no effect.
 	Otherwise, giving an element <dfn export>size containment</dfn>
-	makes its [=principal box=] a <dfn for=size-containment>containing box</dfn> for [=size containment=]
+	makes its [=principal box=] a <dfn for="size containment">containing box</dfn> for [=size containment=]
 	and has the following effects:
 
 	<wpt>
@@ -427,7 +427,7 @@ Size Containment</h3>
 	contain-size-056.html
 	</wpt>
 
-	1. When calculating the size of the [=size-containment/containing box=],
+	1. When calculating the size of the [=size containment/containing box=],
 		including when computing its [=intrinsic size=],
 		it must be treated as having no contents.
 
@@ -469,7 +469,7 @@ Size Containment</h3>
 		</wpt>
 
 		Then,
-		its contents must then be laid out into the [=size-containment/containing box=]'s resolved size normally (including any pseudo-elements),
+		its contents must then be laid out into the [=size containment/containing box=]'s resolved size normally (including any pseudo-elements),
 		i.e. [=size containment=] has no effect in this phase.
 
 		Note: [=size containment=] does not suppress baseline alignment.
@@ -494,7 +494,7 @@ Size Containment</h3>
 		contain-size-replaced-005.html
 		contain-size-replaced-006.html
 		</wpt>
-	2. [=size-containment/Containing boxes=] for <a>size containment</a> are <a spec=css-break-3>monolithic</a> (See [[CSS-BREAK-3#possible-breaks]]).
+	2. [=size containment/Containing boxes=] for <a>size containment</a> are <a spec=css-break-3>monolithic</a> (See [[CSS-BREAK-3#possible-breaks]]).
 
 		<wpt>
 		contain-size-breaks-001.html
@@ -532,7 +532,7 @@ Layout Containment</h3>
 	or a <a spec="css-display-3" lt="atomic inline">non-atomic</a> <a spec="css-display-3">inline-level</a> box,
 	layout containment has no effect.
 	Otherwise, giving an element <dfn export>layout containment</dfn>
-	makes its [=principal box=] a <dfn for=layout-containment>containing box</dfn> for [=layout containment=]
+	makes its [=principal box=] a <dfn for="layout containment">containing box</dfn> for [=layout containment=]
 	and has the following effects:
 
 	<wpt>
@@ -550,7 +550,7 @@ Layout Containment</h3>
 	contain-layout-independent-formatting-context-003.html
 	</wpt>
 
-	1. The [=layout-containment/containing box=] [=establishes an independent formatting context=].
+	1. The [=layout containment/containing box=] [=establishes an independent formatting context=].
 
 		<wpt>
 		contain-layout-ifc-022.html
@@ -560,10 +560,10 @@ Layout Containment</h3>
 		</wpt>
 
 	2. If at least one [=fragmentation container=] of a [=fragmentation context=] has [=layout containment=],
-		or if at least one [=fragmentation container=] of a [=fragmentation context=] is a descendant of [=layout-containment/containing box=] for layout containment
+		or if at least one [=fragmentation container=] of a [=fragmentation context=] is a descendant of [=layout containment/containing box=] for layout containment
 		<strong>and</strong> at least one subsequent [=fragmentation container=] of the same [=fragmentation context=]
 		is not a descendant of that same element with layout containment,
-		then the first [=layout-containment/containing box=] for [=layout containment=]
+		then the first [=layout containment/containing box=] for [=layout containment=]
 		which is either a [=fragmentation container=] itself
 		or is an ancestor of a [=fragmentation container=]
 		must “trap” the remainder of the [=fragmented flow=]:
@@ -636,7 +636,7 @@ Layout Containment</h3>
 		contain-layout-ink-overflow-020.html
 		</wpt>
 
-	4. The [=layout-containment/containing box=] acts as a containing block for absolutely positioned and fixed positioned descendants.
+	4. The [=layout containment/containing box=] acts as a containing block for absolutely positioned and fixed positioned descendants.
 
 		<wpt>
 		contain-layout-006.html
@@ -645,15 +645,15 @@ Layout Containment</h3>
 		contain-layout-cell-002.html
 		</wpt>
 
-	5. The [=layout-containment/containing box=] creates a <a>stacking context</a>.
+	5. The [=layout containment/containing box=] creates a <a>stacking context</a>.
 
 		<wpt>
 		contain-layout-016.html
 		contain-layout-017.html
 		contain-layout-018.html
 		</wpt>
 
-	6. [=Forced breaks=] are allowed within [=layout-containment/containing boxes=] for [=layout containment=],
+	6. [=Forced breaks=] are allowed within [=layout containment/containing boxes=] for [=layout containment=],
 		but do not propagate to the parent as otherwise described in [[CSS-BREAK-3#break-between]].
 
 		<wpt>
@@ -666,9 +666,9 @@ Layout Containment</h3>
 
 	7. For the purpose of the 'vertical-align' property,
 		or any other property whose effects
-		need to relate the position of the [=layout-containment/containing box=]'s baseline
+		need to relate the position of the [=layout containment/containing box=]'s baseline
 		to something other than its descendants,
-		the [=layout-containment/containing box=] is treated as having no baseline.
+		the [=layout containment/containing box=] is treated as having no baseline.
 
 		<wpt>
 		contain-layout-baseline-001.html
@@ -707,7 +707,7 @@ Paint Containment</h3>
 	or a <a spec="css-display-3" lt="atomic inline">non-atomic</a> <a spec="css-display-3">inline-level</a> box,
 	paint containment has no effect.
 	Otherwise, giving an element <dfn export>paint containment</dfn>
-	makes its [=principal box=] a <dfn for=paint-containment>containing box</dfn> for [=paint containment=]
+	makes its [=principal box=] a <dfn for="paint containment">containing box</dfn> for [=paint containment=]
 	and has the following effects:
 
 	<wpt>
@@ -729,7 +729,7 @@ Paint Containment</h3>
 
 	1. The contents of the element
 		including any [=ink overflow|ink=] or [=scrollable overflow=]
-		must be clipped to the <a>padding edge</a> of the [=paint-containment/containing box=],
+		must be clipped to the <a>padding edge</a> of the [=paint containment/containing box=],
 		taking <a>corner clipping</a> into account.
 		This does not include the creation of any mechanism
 		to access or indicate the presence of the clipped content;
@@ -768,7 +768,7 @@ Paint Containment</h3>
 		contain-paint-table-001.html
 		contain-paint-table-002.html
 		</wpt>
-	2. The [=paint-containment/containing box=] acts as a containing block for absolutely positioned and fixed positioned descendants.
+	2. The [=paint containment/containing box=] acts as a containing block for absolutely positioned and fixed positioned descendants.
 
 		<wpt>
 		contain-paint-009.html
@@ -777,15 +777,15 @@ Paint Containment</h3>
 		contain-paint-023.html
 		contain-paint-024.html
 		</wpt>
-	3. The [=paint-containment/containing box=] creates a <a>stacking context</a>.
+	3. The [=paint containment/containing box=] creates a <a>stacking context</a>.
 
 		<wpt>
 		contain-paint-020.html
 		contain-paint-021.html
 		contain-paint-025.html
 		contain-subgrid-001.html
 		</wpt>
-	4. The [=paint-containment/containing box=] [=establishes an independent formatting context=].
+	4. The [=paint containment/containing box=] [=establishes an independent formatting context=].
 
 		<wpt>
 		contain-paint-ifc-011.html