doc/go1.5.html: fix typo

This is the first mention of the fmt package in the changes list.

Change-Id: I5d378d8707e6735e0e590527db4196b517fefd72
Reviewed-on: https://go-review.googlesource.com/12198Reviewed-by: Andrew Gerrand <adg@golang.org>

doc/go1.5.html

@@ -876,7 +876,7 @@ described above.
 </li>
 
 <li>
-Also in the <a href="/pkg/fmt/"><code>fmt</code></a> package,
+In the <a href="/pkg/fmt/"><code>fmt</code></a> package,
 a value of type <a href="/pkg/reflect/#Value"><code>Value</code></a> now
 prints what it holds, rather than use the <code>reflect.Value</code>'s <code>Stringer</code>
 method, which produces things like <code>&lt;int Value&gt;</code>.