content/matchlang: fixed typos

Change-Id: Ifdc69c863f8569415b15fabd82c85680fd983ffe
Reviewed-on: https://go-review.googlesource.com/19419
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
diff --git a/content/matchlang.article b/content/matchlang.article
index ab8a7d0..b945337 100644
--- a/content/matchlang.article
+++ b/content/matchlang.article
@@ -10,9 +10,9 @@
 in its user interface.
 When a user arrives with a list of preferred languages, the application must
 decide which language it should use in its presentation to the user.
-This requires finding the best match between the languages the applications supports 
+This requires finding the best match between the languages the applications supports
 and those the user prefers.
-This post explains why this is a difficult decision and how how Go can help.
+This post explains why this is a difficult decision and how Go can help.
 
 * Language Tags