content/matchlang: make table indented a bit more than paragraph

The default appears to be 0, but paragraphs are 20px, so right now
it appears to the left of the paragraph text.

Change-Id: Ied3b8ffc2f78a2cd6cdcca73997dfd2859432a30
Reviewed-on: https://go-review.googlesource.com/19422
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
1 file changed