[css-anchor-position-1][editorial] markup fixes

Author: tabatkins

css-anchor-position-1/Overview.bs

@@ -360,7 +360,7 @@ The 'inset-area' Property {#inset-area}
 
 <pre class=propdef>
 Name: inset-area
-Value: none | <inset-area-span> [ / <inset-area-span> ]?
+Value: none | <<inset-area-span>> [ / <<inset-area-span>> ]?
 Initial: none
 Inherited: no
 Applies to: positioned elements with a [=default anchor element=]
@@ -431,7 +431,7 @@ In order:
 * the start edge of the element's [=containing block=]
 	(aka the position referred to by ''top: 0px;''
 	or whatever [=inset property=] corresponds to
-	the start side fo the containing block)
+	the start side of the containing block)
 * the ''anchor(start)'' edge of the [=default anchor element=]
 * the ''anchor(end)'' edge of the [=default anchor element=]
 * the end edge of the element's [=containing block=]
@@ -441,7 +441,7 @@ In order:
 Each <<inset-area-span>> specifies 1-3 regions in a given axis of that grid:
 the "start" region between the first two of those grid lines;
 the "center" region between the center two;
-or the "end region" between the last two.
+and/or the "end region" between the last two.
 
 <dl dfn-type=value dfn-for="inset-area, <inset-area-span>">
 	: <dfn>all</dfn>
@@ -482,7 +482,6 @@ or the "end region" between the last two.
 
 Two spans referring to different axises
 thus define a rectangular region of the [=inset-area grid=].
-
 To determine the axises of two spans:
 
 * If a span include a keyword that implies a physical axis
@@ -525,14 +524,15 @@ is ''align-self/normal'':
 	which will compute the [=inset properties=] to:
 
 	<pre highlight=css>
-	/* "auto" computes to: */
-	top: 0px;
-	bottom: anchor(start);
-	left: 0px;
-	right: anchor(end);
-	/* "normal" behaves as: */
-	align-self: end;
-	justify-self: anchor-center;
+		/* "auto" computes to */
+		top: 0px;
+		bottom: anchor(start);
+		left: 0px;
+		right: anchor(end);
+
+		/* "normal" behaves as */
+		align-self: end;
+		justify-self: anchor-center;
 	</pre>
 
 	In other words, its [=inset-modified containing block=]