assign macro dialog: correct event name "errorOccured"

"errorOccured" is an English spelling mistake, but is the
name of the event, which cannot / should not be changed for
backwards compatibility reasons.

Spelling was boguously "corrected" in:

  commit 60a9b517
  Author: Takeshi Abe <tabe@fixedpoint.jp>
  Date:   Sat Dec 4 12:56:38 2010 +0900

      Replace all occured, occurance etc.

This was leading to impossibility of assigning a macro
to that event, since it was not appearing in this dialog.

Change-Id: Ib0373501cba8af8f4abb1c62faddf8d65c926a7e

cui/source/customize/macropg.cxx

@@ -324,7 +324,7 @@ void _SvxMacroTabPage::InitResources()
     aDisplayNames.push_back( EventDisplayName( "approveCursorMove",     RID_SVXSTR_EVENT_POSITIONING ) );
     aDisplayNames.push_back( EventDisplayName( "cursorMoved",           RID_SVXSTR_EVENT_POSITIONED ) );
     aDisplayNames.push_back( EventDisplayName( "approveParameter",      RID_SVXSTR_EVENT_APPROVEPARAMETER ) );
-    aDisplayNames.push_back( EventDisplayName( "errorOccurred",          RID_SVXSTR_EVENT_ERROROCCURRED ) );
+    aDisplayNames.push_back( EventDisplayName( "errorOccured",          RID_SVXSTR_EVENT_ERROROCCURRED ) );
     aDisplayNames.push_back( EventDisplayName( "adjustmentValueChanged",   RID_SVXSTR_EVENT_ADJUSTMENTVALUECHANGED ) );
 }