content/go-fonts: add Turkish to the list of languages

Missing in error.

Also line-break the huge list for future manageability.

Change-Id: Ia6bc1ee70b5f27cd3585af6a6ed9d12f04b32120
Reviewed-on: https://go-review.googlesource.com/33337
Reviewed-by: Andrew Gerrand <adg@golang.org>
1 file changed