[css2] addressed issue 177, minor rewording

--HG--
extra : convert_revision : svn%3A73dc7c4b-06e6-40f3-b4f7-9ed1dbc14bfc/trunk%402516

Author: howcom

css2/generate.src

@@ -705,7 +705,7 @@ they allow style sheets to specify the marker type (image, glyph, or
 number), and the marker position with respect to the principal box
 (outside it or within it before content). They do not allow authors to
 specify distinct style (colors, fonts, alignment, etc.) for the list
-marker or adjust its position with respect to the principal box, these
+marker or adjust its position with respect to the principal box; these
 may be derived from the principal box.
 
 <P>The <a href="colors.html#background-properties">background