Editorial: fix broken cross-reference 'quirky colors'

Fixes #65.

quirks.bs

@@ -114,8 +114,8 @@ different modes have since gained a few differences outside of CSS.
   <p>Where possible, limit quirks to a fixed set of legacy features so they don't propagate into
   new features.
 
-  <p class=example id=example-limit-quirks>For example, <a>quirky colors</a> are limited to a fixed
-  set of CSS properties so that they do not apply in SVG features that also accept colors, or in <a
+  <p class=example id=example-limit-quirks>For example, [[#the-hashless-hex-color-quirk]] is limited to a fixed
+  set of CSS properties so that the quirk does not apply in SVG features that also accept colors, or in <a
   href="https://bugs.webkit.org/show_bug.cgi?id=153730">CSS gradients where the grammar could
   otherwise become ambiguous</a>.