Update spec/index.html

Co-authored-by: Pierre-Antoine Champin <[email protected]>

Author: doerthe

spec/index.html

@@ -1091,7 +1091,7 @@ <h4>Patterns of RDF entailment (Informative)</h4>
           </tr>
           <tr >
             <td class="othertable"><dfn>rdfD1</dfn></td>
-            <td class="othertable">ttt and <code>"</code>sss<code>"^^</code>ddd appears in ttt <br/>
+            <td class="othertable">Any triple ttt such that <code>"</code>sss<code>"^^</code>ddd appears in ttt <br/>
                 for ddd in D</td>
             <td class="othertable">ttt [<code>"</code>sss<code>"^^</code>/_:nnn] <br/>
       _:nnn <code>rdf:type</code> ddd <code>.</code></td>