doc/go1.17: linkify "language changes" in the runtime section

Change-Id: I82bd3954bfc5da59c7952eba2a28ff0e3b41427f
Reviewed-on: https://go-review.googlesource.com/c/go/+/331969
Trust: Bryan C. Mills <[email protected]>
Run-TryBot: Bryan C. Mills <[email protected]>
TryBot-Result: Go Bot <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>

Author: Bryan C. Mills

doc/go1.17.html

@@ -993,7 +993,7 @@ <h3 id="minor_library_changes">Minor changes to the library</h3>
       is no longer sufficient to guarantee that a call to
       <a href="/pkg/reflect/#Value.Convert"><code>Value.Convert</code></a> will not panic.
       It may panic when converting `[]T` to `*[N]T` if the slice's length is less than N.
-      See the language changes section above.
+      See the <a href="#language">language changes</a> section above.
     </p>
   </dd>
 </dl><!-- reflect -->