Fix a couple of links in HTML files.
@@ -26,7 +26,8 @@ with all platforms.
<p>
<p>
-All rules other than [Workspace Rules](workspace.html) support this attribute.
+All rules other than <a href="workspace.html">Workspace Rules</a> support this
+attribute.
For some rules this attribute has no effect. For example, specifying
<code>target_compatible_with</code> for a
<code><a href="c-cpp.html#cc_toolchain">cc_toolchain</a></code> is not useful.
