[css-fonts-4] Definition for src descriptor and local(), data()

#677

Author: litherum

css-fonts-4/Overview.bs

@@ -1168,7 +1168,7 @@ at least as dark as its predecessor. Only values between 1 - 999 are valid, and
 
 	<pre class='descdef mq'>
 	Name: src
-	Value: [ <<url>> [ format( <<string>> # )]? | <<font-face-name>> ] #
+	Value: [ <<url>> [ format( <<string>> # )]? | local(<<font-face-name>>) ] #
 	For: @font-face
 	Initial: N/A
 	</pre>
@@ -1291,9 +1291,7 @@ at least as dark as its predecessor. Only values between 1 - 999 are valid, and
 	copy of a given font and download it if it's not, <code>local()</code>
 	can be used. The locally-installed 'font-face-name'
 	argument to <code>local()</code> is a format-specific string that
-	uniquely identifies a single font face within a larger family.  The
-	syntax for a 'font-face-name' is a unique font face
-	name enclosed by "local(" and ")".  The name can optionally be
+	uniquely identifies a single font face within a larger family. The name can optionally be
 	enclosed in quotes.  If unquoted, the unquoted font family name
 	processing conventions apply; the name must be a sequence of
 	identifiers separated by <a href="https://www.w3.org/TR/css3-syntax/#whitespace">whitespace</a>