[docs] doc.getSelections returns an array of strings.

Author: kmctown

doc/manual.html

@@ -1254,7 +1254,7 @@ <h3 id="api_selection">Cursor and selection methods</h3>
       separator to put between the lines in the output. When multiple
       selections are present, they are concatenated with instances
       of <code>lineSep</code> in between.</dd>
-      <dt id="getSelections"><code><strong>doc.getSelections</strong>(?lineSep: string) → string</code></dt>
+      <dt id="getSelections"><code><strong>doc.getSelections</strong>(?lineSep: string) → array&lt;string&gt;</code></dt>
       <dd>Returns an array containing a string for each selection,
       representing the content of the selections.</dd>