[css-contain-3] Fix link errors (#7300)

- Make 'fictional tag sequence' link to something.
 - Use 'identifier' from css-values, not css-syntax.
 - Remove references to <<size-query>>, as that no longer exists, and:
 - Also remove references to <<style-query>>, to be consistent.
 - '@container/orientation' instead of 'orientation'.
 - Link to <<'container-type'>> instead of the now non-existent
   <<container-type>.

Co-authored-by: Anders Hartvoll Ruud <andruud@google.com>

Author: andruud

css-contain-3/Overview.bs

@@ -28,6 +28,7 @@ spec:css-break-3; type:dfn; text:fragmentation context
 spec:css-break-3; type:dfn; text:fragmented flow
 spec:css-contain-2; type:dfn; text:layout containment box
 spec:css-contain-2; type:dfn; text:size containment box
+spec:css-pseudo-4; type:dfn; text:fictional tag sequence
 spec:css-sizing-4; type:property; text:contain-intrinsic-size
 spec:css-sizing-4; type:property; text:aspect-ratio
 spec:intersection-observer; type:dfn; text:intersection root
@@ -38,7 +39,6 @@ spec:css-sizing-3; type:dfn; text:width
 spec:css-sizing-3; type:property; text:height
 spec:css-sizing-3; type:dfn; text:height
 spec:css-sizing-3; type:dfn; text:size
-spec:css-syntax-3; type:dfn; text:identifier
 spec:css-values-4; type:dfn; text:relative length
 spec:web-animations-1; type:dfn; text:effect values
 </pre>
@@ -713,7 +713,6 @@ Container Features</h2>
 Size Container Features</h3>
 
 	A <dfn export>container size query</dfn>
-	(syntactically represented as <<size-query>>)
 	allows querying
 	the size of the [=query container=]’s [=principal box=].
 	It is a boolean combination of
@@ -722,7 +721,7 @@ Size Container Features</h3>
 	The syntax of a <dfn><<size-feature>></dfn> is the same as for a [=media feature=]:
 	a feature name, a comparator, and a value.
 	[[mediaqueries-5]]
-	The boolean syntax and logic combining [=size features=] into a <<size-query>>
+	The boolean syntax and logic combining [=size features=] into a [=container size query|size query=]
 	is the same as for [=CSS feature queries=].
 	(See ''@supports''. [[!CSS-CONDITIONAL-3]])
 
@@ -851,20 +850,19 @@ Orientation: the '@container/orientation' feature</h4>
 	<dl dfn-type=value dfn-for="@container/orientation">
 		<dt><dfn>portrait</dfn>
 		<dd>
-			The 'orientation' [=container feature=] is ''portrait''
+			The '@container/orientation' [=container feature=] is ''portrait''
 			when the value of the '@container/height' [=container feature=]
 			is greater than or equal to
 			the value of the '@container/width' [=container feature=].
 		<dt><dfn>landscape</dfn>
-		<dd>Otherwise 'orientation' is ''landscape''.
+		<dd>Otherwise '@container/orientation' is ''landscape''.
 	</dl>
 
 
 <h3 id="style-container">
 Style Container Features</h3>
 
 	A <dfn export>container style query</dfn>
-	(syntactically represented by <<style-query>>)
 	allows querying
 	the [=computed values=] of the [=query container=].
 	It is a boolean combination of
@@ -878,7 +876,7 @@ Style Container Features</h3>
 	(which is also [=computed value|computed=] with respect to the [=query container=]),
 	unknown if the property or its value is invalid or unsupported,
 	and false otherwise.
-	The boolean syntax and logic combining [=style features=] into a <<style-query>>
+	The boolean syntax and logic combining [=style features=] into a [=container style query|style query=]
 	is the same as for [=CSS feature queries=].
 	(See ''@supports''. [[!CSS-CONDITIONAL-3]])
 
@@ -1049,7 +1047,7 @@ Changes since the 21 December 2021 First Public Working Draft</h3>
 	* Remove the <<string>> option from the 'container-name' syntax.
 		Container names must be <<custom-ident>>s.
 		(<a href="https://github.com/w3c/csswg-drafts/issues/6405">Issue 6405</a>)
-	* Reverse the order of <<container-name>> and <<container-type>>
+	* Reverse the order of <<'container-name'>> and <<'container-type'>>
 		in the 'container' shorthand property, with both being optional.
 		(<a href="https://github.com/w3c/csswg-drafts/issues/6393">Issue 6393</a>)
 	* Allow <<general-enclosed>> syntax in <<container-condition>>s,