doc/contribute.html: mention hg mail during hg change discussion
People keep not reading all the way to the bottom of the doc
and not running hg mail.
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7137057
diff --git a/doc/contribute.html b/doc/contribute.html
index b9e268a..494f058 100644
--- a/doc/contribute.html
+++ b/doc/contribute.html
@@ -290,6 +290,11 @@
</p>
<p>
+Creating the change uploads a copy of the diff to the code review server, but it does not
+notify anyone about it. To do that, you need to run <code>hg mail</code> (see below).
+</p>
+
+<p>
You can see a list of your pending changes by running <code>hg pending</code> (<code>hg p</code> for short).
</p>
