tour: added link to Uzbek translation.

Change-Id: Id7c28ff9471e205196d496ec3d9db984d74f52a9
Reviewed-on: https://go-review.googlesource.com/14374
Reviewed-by: Andrew Gerrand <adg@golang.org>
diff --git a/content/welcome.article b/content/welcome.article
index b7123fe..0b1dcac 100644
--- a/content/welcome.article
+++ b/content/welcome.article
@@ -60,6 +60,7 @@
 - [[http://tour.go-zh.org/][Simplified Chinese — 中文(简体)]]
 - [[http://go-tour-zh-tw.appspot.com/][Traditional Chinese — 中文(繁體)]]
 - [[http://go-tour-ua.appspot.com/][Ukrainian — Українська]]
+- [[http://go-tour-uz.appspot.com/][Uzbek — Ўзбекча]]
 
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