blog: correct link to Google+ Community

Fixes golang/go#25541

Change-Id: I56bea8febfab6f5c9c563e442367ffb3cc2ea58a
Reviewed-on: https://go-review.googlesource.com/114502
Reviewed-by: Chris Broadfoot <cbro@golang.org>
diff --git a/template/root.tmpl b/template/root.tmpl
index ab6a346..fcce4c3 100644
--- a/template/root.tmpl
+++ b/template/root.tmpl
@@ -102,7 +102,7 @@
 	<li><a href='//golang.org/doc/'>Go Documentation</a></li>
 	<li><a href='//groups.google.com/group/golang-nuts'>Go Mailing List</a></li>
 	<li><a href='//plus.google.com/101406623878176903605'>Go on Google+</a></li>
-	<li><a href='//plus.google.com/112164155169467723645/posts'>Go+ Community</a></li>
+	<li><a href='//plus.google.com/communities/114112804251407510571'>Go+ Community</a></li>
 	<li><a href='//twitter.com/golang'>Go on Twitter</a></li>
 	</ul>