[css-text-3] treat lone cr as any control character #855

Closes #855

Author: frivoal

css-text-3/Overview.bs

@@ -596,7 +596,7 @@ Characters and Letters</h3>
     (that are not <a>segment breaks</a>)
     are rendered as a zero-width space (U+200B). <!-- thus can disrupt shaping -->
     Control characters (<a>Unicode category</a> <code>Cc</code>)
-    other than tab (U+0009), line feed (U+000A), form feed (U+000C), and carriage return (U+000D)
+    other than tab (U+0009), line feed (U+000A), and form feed (U+000C),
     must be rendered as a visible glyph
     which the UA must synthethize if the glyphs found in the font are not visible
     and otherwise treated as any other character