remove unnecessary "a" in CSP 4.2.2 step 2 (cont)

Author: michaelficarra

specs/CSP2/index.html

@@ -767,7 +767,7 @@ <h4 class="heading settled" data-level="4.2.2" id="match-source-expression"><spa
       a <var>protected resource</var> if the following algorithm returns <em>does match</em>:</p>
       <ol>
        <li> Let <var>url</var> be the result of processing the URL through the <a data-link-type="dfn" href="http://www.w3.org/TR/url/#concept-url-parser">URL parser</a>. 
-       <li> If the source expression a consists of a single U+002A ASTERISK
+       <li> If the source expression consists of a single U+002A ASTERISK
           character (<code>*</code>), and <var>url</var>’s <a data-link-type="dfn" href="http://www.w3.org/TR/url/#concept-url-scheme">scheme</a> is not
           one of <code>blob</code>, <code>data</code>, <code>filesystem</code>,
           then return <em>does match</em>. 
@@ -2635,4 +2635,4 @@ <h2 class="no-num heading settled" id="idl-index"><span class="content">IDL Inde
 
 </pre>
  </body>
-</html>
+</html>