fix link

Andrew Kirkpatrick · web-flow · commit 37e5e6d6c54a · 2018-08-01T12:53:50.000-04:00
diff --git a/f87.html b/f87.html
@@ -19,7 +19,7 @@
 <body>
 <h1>F87 Examples</h1>
 
-<p>From <a href="https://www.w3.org/TR/WCAG20-TECHS/F87.html">Failure Technique F87.</p>
+ <p>From <a href="https://www.w3.org/TR/WCAG20-TECHS/F87.html">Failure Technique F87</a>.</p>
 
 <h2>Example 1</h2>
 <p class="jim">
