[css-fonts-4] Use unicode-range-token instead of urange w3c#8835

Author: svgeesus

css-fonts-4/Overview.bs

@@ -3230,7 +3230,7 @@ Character range: the 'unicode-range!!descriptor' descriptor</h3>
 
 <pre class='descdef'>
 Name: unicode-range
-Value: <<urange>>#
+Value: <<unicode-range-token>>#
 Initial: U+0-10FFFF
 For: @font-face
 </pre>
@@ -3243,13 +3243,12 @@ For: @font-face
 
 This descriptor defines the set of Unicode codepoints that may be
 supported by the font face for which it is declared. The descriptor
-value is a comma-delimited list of Unicode range (<<urange>>)
+value is a comma-delimited list of Unicode range token (<unicode-range-token>>)
 values. The union of these ranges defines the set of codepoints that
 serves as a hint for user agents when deciding whether or not to
 download a font resource for a given text run.
 
-Each <<urange>> value is a
-<a href="https://www.w3.org/TR/CSS21/syndata.html#tokenization"><code title="UNICODE-RANGE token">UNICODE-RANGE</code></a>
+Each <<unicode-range-token>> value is a
 token made up of a "U+" or "u+" prefix
 followed by a codepoint range in one of the three forms listed below.
 Ranges that do not fit one of these forms are invalid