content: fix italic text in matchlang.article

Fix italic text by removing the space between the underscore and first letter.

Screenshot of issue:

<img width="870" alt="image" src="https://user-images.githubusercontent.com/62928647/86102576-992d0c00-bab3-11ea-9c25-2011cc46b109.png">

Screenshot of fix:

<img width="966" alt="image" src="https://user-images.githubusercontent.com/62928647/86102505-81558800-bab3-11ea-9ac5-3270d55eb56d.png">

Change-Id: I7698f6f40295221c8b4d00d7ae28a0cdc45fc436
GitHub-Last-Rev: cb14d1cd83ae5115c01ff72c0f1b9e96ba85d9f5
GitHub-Pull-Request: golang/blog#40
Reviewed-on: https://go-review.googlesource.com/c/blog/+/240480
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/content/matchlang.article b/content/matchlang.article
index cb3b90b..70c121a 100644
--- a/content/matchlang.article
+++ b/content/matchlang.article
@@ -55,7 +55,7 @@
 and partly because of the legacy of evolving language tag standards.
 In this section we will show some of the messy aspects of handling language tags.
 
-_ Tags with different language codes can indicate the same language_
+_Tags with different language codes can indicate the same language_
 
 For historical and political reasons, many language codes have changed over
 time, leaving languages with an older legacy code as well as a new one.