Correct rst syntax in playbooks_filters.rst (#66198)

The `regex_replace` documentation included an example that was meant
to be preformatted text but due to an indentation error was rendering
incorrectly.
This commit is contained in:
Lars Kellogg-Stedman 2020-01-06 11:13:21 -05:00 committed by Alicia Cozine
parent 6ba4f04f45
commit f85d9d7028