Fix typo

Change-Id: I1ed7280266fc2612ca1286c129a614c51aba3571
Reviewed-on: https://gerrit.libreoffice.org/73636
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

forms/source/richtext/richtextimplcontrol.cxx

@@ -289,7 +289,7 @@ namespace frm
         bool bVScroll = bool( nStatusWord & EditStatusFlags::VSCROLL );
 
         // In case of *no* automatic line breaks, we also need to check for the *range* here.
-        // Normally, we would do this only after a EditStatusFlags::TEXTWIDTHCHANGED. However, due to a bug
+        // Normally, we would do this only after an EditStatusFlags::TEXTWIDTHCHANGED. However, due to a bug
         // in the EditEngine (I believe so) this is not fired when the engine does not have
         // the AutoPaperSize bits set.
         // So in order to be properly notified, we would need the AutoPaperSize. But, with