[css-writing-modes] Fix linking error

Author: fantasai

css-writing-modes/Overview.bs

@@ -20,7 +20,7 @@ At Risk: The ''sideways-lr'' and ''sideways-rl'' of 'writing-mode'
 At Risk: The ''digits'' value of 'text-combine-upright'.
 At Risk: The look-ahead/look-behind sequencing rules for 'text-combine-upright'.
 At Risk: <a href="#auto-multicol">Automatic multi-column behavior</a> of orthogonal flows.
-Ignored Terms: glyph orientation, *-left, *-right, *-top, *-bottom, text-combine-mode, root inline box, … message topic …
+Ignored Terms: glyph orientation, *-left, *-right, *-top, *-bottom, text-combine-mode, root inline box, … message topic …, glyph-orientation-horizontal
 Link Defaults: css21 (property) display/min-height/max-height/min-width/max-width/clip/left/right/bottom/top, css-text-3 (property) letter-spacing, css-text-decor-3 (property) text-decoration, svg2 (property) glyph-orientation-vertical/glyph-orientation-horizontal
 Use <i> Autolinks: yes
 </pre>