doc: update go1 for html changes

R=golang-dev, rsc, r
CC=golang-dev
https://golang.org/cl/5713054

doc/go1.html

@@ -650,10 +650,16 @@ Several packages have moved under <code>exp</code> at the time of Go 1's release
 
 <ul>
 <li><code>ebnf</code></li>
+<li><code>html</code>&#8224;</li>
 <li><code>go/types</code></li>
 <li><code>os/signal</code></li>
 </ul>
 
+<p>
+(&#8224;The <code>EscapeString</code> and <code>UnescapeString</code> types remain
+in package <code>html</code>.)
+</p>
+
 <p>
 All these packages are available under the same names, with the prefix <code>exp/</code>: <code>exp/ebnf</code> etc.
 </p>

doc/go1.tmpl

@@ -574,10 +574,16 @@ Several packages have moved under <code>exp</code> at the time of Go 1's release
 
 <ul>
 <li><code>ebnf</code></li>
+<li><code>html</code>&#8224;</li>
 <li><code>go/types</code></li>
 <li><code>os/signal</code></li>
 </ul>
 
+<p>
+(&#8224;The <code>EscapeString</code> and <code>UnescapeString</code> types remain
+in package <code>html</code>.)
+</p>
+
 <p>
 All these packages are available under the same names, with the prefix <code>exp/</code>: <code>exp/ebnf</code> etc.
 </p>