in the query docs, correctly refer to the --output option not --order

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Change-Id: I7830558b688fb648d6f931bf79e82b9ee65bb18c
Reviewed-on: https://bazel-review.googlesource.com/c/3160/
MOS_MIGRATED_REVID=118472905

site/docs/query.html

@@ -1285,7 +1285,7 @@ <h3 id='result-order'>On the ordering of results</h3>
   it is equivalent to <code>deps</code>.
 </p>
 <p>
-  When this flag is <code>no</code> and <code>--order</code> is one of
+  When this flag is <code>no</code> and <code>--output</code> is one of
   <code>build</code>, <code>label</code>, <code>label_kind</code>,
   <code>location</code>, <code>package</code>, <code>proto</code>,
   <code>record</code> or <code>xml</code>, the outputs will be printed in