Merge pull request #3842 from vespa-engine/bratseth/mention-nativeRank

Mention nativeRank as it is more well known

Author: bratseth

en/reference/schema-reference.html

@@ -3950,7 +3950,7 @@ <h3 id="rank-element-gap">element-gap</h3>
   The minimum distance between occurrences for terms <em>c</em> and <em>d</em> is not calculated since they are not in adjacent elements.
 </p>
 <p>
-  The <code>element-gap</code> setting affects the nativeProximity rank feature, the <code>near</code> query operator and the <code>onear</code> query operator.
+  The <code>element-gap</code> setting affects the nativeProximity/nativeRank rank features, the <code>near</code> query operator and the <code>onear</code> query operator.
 </p>
 <pre>
 rank [field-name] {