remove unnecessary "a" in CSP 4.2.2 step 2

Author: michaelficarra

specs/CSP2/index.src.html

@@ -1053,7 +1053,7 @@ <h4 id="match-source-expression">Matching Source Expressions</h4>
         </li>
 
         <li>
-          If the source expression a consists of a single U+002A ASTERISK
+          If the source expression consists of a single U+002A ASTERISK
           character (<code>*</code>), and <var>url</var>'s <a>scheme</a> is not
           one of <code>blob</code>, <code>data</code>, <code>filesystem</code>,
           then return <em>does match</em>.