Merge branch 'feature/xep-0004' into premerge

xep-0004.xml

@@ -27,6 +27,12 @@
     &jer;
     &temas;
     &stpeter;
+    <revision>
+      <version>2.12.1</version>
+      <date>2021-06-08</date>
+      <initials>ssw</initials>
+      <remark><p>Add missing "one" in a sentence (editorial).</p></remark>
+    </revision>
     <revision>
       <version>2.12.0</version>
       <date>2021-02-27</date>
@@ -303,7 +309,7 @@
   <section2 topic='Multiple Items in Form Results' anchor='protocol-results'>
     <p>In some contexts (e.g., the results of a search request), it may be necessary to communicate multiple items. Therefore, a data form of type "result" MAY contain two child elements not described in the basic syntax above:</p>
     <ol>
-      <li>One and only &lt;reported/&gt; element, which can be understood as a "table header" describing the data to follow.</li>
+      <li>One and only one &lt;reported/&gt; element, which can be understood as a "table header" describing the data to follow.</li>
       <li>Zero or more &lt;item/&gt; elements, which can be understood as "table cells" containing data (if any) that matches the request.</li>
     </ol>
 	<p>The &lt;reported/&gt; element MUST appear before any &lt;item/&gt; element inside the &lt;x/&gt; element.</p>