refactor: X Vocabulary Document

X Vocabulary Document --> Vocabulary Document for a Binding
dfn-x-vocabulary-document --> dfn-vocabulary-document-for-a-binding

Author: danielpeintner

index.html

@@ -215,7 +215,7 @@ <h2>Terminology</h2>
           document for a binding entry.
         </dd>
         <dt>
-          <dfn id="dfn-x-vocabulary-document">X Vocabulary Document</dfn>
+          <dfn id="dfn-vocabulary-document-for-a-binding">Vocabulary Document for a Binding</dfn>
         </dt>
         <dd>
           A human-readable version of the vocabulary defined at <a>Vocabulary in RDF for a Binding</a>. This is a supporting
@@ -870,7 +870,7 @@ <h3>Content</h3>
               Binding Content:
               <ul>
                 <li>URL Format</li>
-                <li>Form <a href="#dfn-x-vocabulary-document">Vocabulary Definition as Table</a></li>
+                <li>Form <a href="#dfn-vocabulary-document-for-a-binding">Vocabulary Definition as Table</a></li>
                 <li>Default and possible mappings to operations as a Table</li>
               </ul>
             </li>