fixing typo in Writer's menu entry for uno:SaveGraphic

Change-Id: Ia69c49c5e025ef0391a304e60679a05add14f18e
Reviewed-on: https://gerrit.libreoffice.org/14577Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>

officecfg/registry/data/org/openoffice/Office/UI/WriterCommands.xcu

@@ -2340,7 +2340,7 @@
       </node>
       <node oor:name=".uno:SaveGraphic" oor:op="replace">
         <prop oor:name="Label" oor:type="xs:string">
-          <value xml:lang="en-US">Save Images...</value>
+          <value xml:lang="en-US">Save Image...</value>
         </prop>
         <prop oor:name="Properties" oor:type="xs:int">
             <value>1</value>