Update spec/index.html

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

Author: doerthe

spec/index.html

@@ -1497,7 +1497,7 @@ <h4>Patterns of RDFS entailment (Informative)</h4>
           </tr>
           <tr >
             <td class="othertable"><dfn>rdfs4</dfn></td>
-            <td class="othertable">ttt and xxx appears in ttt</td> 
+            <td class="othertable">Any triple ttt such that xxx appears in ttt</td> 
             <td class="othertable">xxx <code>rdf:type rdfs:Resource .</code>
           </tr>
           <tr >