x/blog/content/matchlang: fix some type and style issues
x/blog/content/matchlang: fix some type and style issues

Change-Id: I21cec2462b8f9dbc26dffdc19dbcb3a99ab691c0
Reviewed-on: https://go-review.googlesource.com/19467
Reviewed-by: Marcel van Lohuizen <a22d082192f3ccf984644a4f482781f4c2d65180@golang.org>

jeffreyliguori/blog