fdo#39477: Mac Keyboard shortcut Option key ko in Customize dialog

There's still a problem of order of symbols between menu shortcut and the 2 shortcuts in Customize dialog

Change-Id: I7d8235130e8ddb8aa510a20cf803fbe81038b023
Reviewed-on: https://gerrit.libreoffice.org/10600Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

vcl/osx/salframe.cxx

@@ -1060,7 +1060,7 @@ OUString AquaSalFrame::GetKeyName( sal_uInt16 nKeyCode )
         // we do not really handle Alt (see below)
         // we map it to MOD3, whichis actually Command
         if( (nKeyCode & (KEY_MOD2|KEY_MOD3)) != 0 )
-            aResult.append( sal_Unicode( 0x2303 ) );
+            aResult.append( sal_Unicode( 0x2325 ) );
 
         aResult.append( it->second );
     }