Fix another typo in a comment

Change-Id: Ic998270701d2e8d2b562ccc869bca0a8d0aac728
Reviewed-on: https://gerrit.libreoffice.org/8778Reviewed-by: Chris Sherlock <chris.sherlock79@gmail.com>
Tested-by: Chris Sherlock <chris.sherlock79@gmail.com>

vcl/source/gdi/outdev6.cxx

@@ -179,7 +179,7 @@ void OutputDevice::DrawGrid( const Rectangle& rRect, const Size& rDist, sal_uLon
 
 // Caution: This method is nearly the same as
 // void OutputDevice::DrawPolyPolygon( const basegfx::B2DPolyPolygon& rB2DPolyPoly )
-// so when changes are made here do not forget to make change sthere, too
+// so when changes are made here do not forget to make changes there, too
 
 void OutputDevice::DrawTransparent( const basegfx::B2DPolyPolygon& rB2DPolyPoly, double fTransparency)
 {