[css-syntax] Fix some cross-references.

Author: SimonSapin

css-syntax/Overview.html

@@ -1808,8 +1808,9 @@ <h4 id=hash-state><span class=secno>4.4.4. </span> <dfn id=hash-state0>Hash
    state</dfn></h4>
 
   <p> Create a new hash token with its value initially set to the empty
-   string. If the input stream <i>looks like an identifier</i>, set the hash
-   token's type flag to "id".
+   string. If the input stream <a
+   href="#check-if-the-input-stream-starts-with-an0"><i>starts with an
+   identifier</i></a>, set the hash token's type flag to "id".
 
   <p> Consume the <a href="#next-input-character"><i>next input
    character</i></a>.
@@ -1823,10 +1824,11 @@ <h4 id=hash-state><span class=secno>4.4.4. </span> <dfn id=hash-state0>Hash
 
    <dt>U+005C REVERSE SOLIDUS (\)
 
-   <dd> If the input stream <i>looks like a valid escape</i>, <a
-    href="#consume-an-escaped-character0"><i>consume an escaped
-    character</i></a> and append the returned character to the hash token's
-    value. Switch to the <a href="#hash-rest-state0"><i>hash-rest
+   <dd> If the input stream <a
+    href="#check-if-two-characters-are-a-valid-esca0"><i>starts with a valid
+    escape</i></a>, <a href="#consume-an-escaped-character0"><i>consume an
+    escaped character</i></a> and append the returned character to the hash
+    token's value. Switch to the <a href="#hash-rest-state0"><i>hash-rest
     state</i></a>.
     <p> Otherwise, this is a <a href="#parse-errors"><i>parse error</i></a>.
      Emit a delim token with its value set to U+0023 NUMBER SIGN (#). Switch
@@ -1856,10 +1858,11 @@ <h4 id=hash-rest-state><span class=secno>4.4.5. </span> <dfn
 
    <dt>U+005C REVERSE SOLIDUS (\)
 
-   <dd> If the input stream <i>looks like a valid escape</i>, <a
-    href="#consume-an-escaped-character0"><i>consume an escaped
-    character</i></a> and append the returned character to the hash token's
-    value. Remain in this state.
+   <dd> If the input stream <a
+    href="#check-if-two-characters-are-a-valid-esca0"><i>starts with a valid
+    escape</i></a>, <a href="#consume-an-escaped-character0"><i>consume an
+    escaped character</i></a> and append the returned character to the hash
+    token's value. Remain in this state.
     <p> Otherwise, this is a <a href="#parse-errors"><i>parse error</i></a>.
      Emit the hash token. Switch to the <a href="#data-state0"><i>data
      state</i></a>. <a

css-syntax/Overview.src.html

@@ -1039,7 +1039,7 @@ <h4>
 	<p>
 		Create a new hash token
 		with its value initially set to the empty string.
-		If the input stream <i>looks like an identifier</i>,
+		If the input stream <i>starts with an identifier</i>,
 		set the hash token's type flag to "id".
 
 	<p>
@@ -1054,7 +1054,7 @@ <h4>
 
 		<dt>U+005C REVERSE SOLIDUS (\)
 		<dd>
-			If the input stream <i>looks like a valid escape</i>,
+			If the input stream <i>starts with a valid escape</i>,
 			<i>consume an escaped character</i>
 			and append the returned character to the hash token's value.
 			Switch to the <i>hash-rest state</i>.
@@ -1090,7 +1090,7 @@ <h4>
 
 		<dt>U+005C REVERSE SOLIDUS (\)
 		<dd>
-			If the input stream <i>looks like a valid escape</i>,
+			If the input stream <i>starts with a valid escape</i>,
 			<i>consume an escaped character</i>
 			and append the returned character to the hash token's value.
 			Remain in this state.