Update plugins.md (#6716)

Merge pull request 6716

docs/_docs/plugins.md

@@ -920,7 +920,7 @@ You can find a few useful plugins at the following locations:
 
 #### Other
 
-- [Analytics for Jekyll](https://github.com/hendrikschneider/jekyll-analytics) by Hendrik Schneider: An effortless way to add  various trackers like Google Analytics, Piwik, etc. to your site
+- [Analytics for Jekyll](https://github.com/hendrikschneider/jekyll-analytics) by Hendrik Schneider: An effortless way to add various trackers like Google Analytics, Matomo (formerly Piwik), mPulse, etc. to your site.
 - [ditaa-ditaa](https://github.com/tmthrgd/ditaa-ditaa) by Tom Thorogood: a drastic revision of jekyll-ditaa that renders diagrams drawn using ASCII art into PNG images.
 - [Pygments Cache Path by Raimonds Simanovskis](https://github.com/rsim/blog.rayapps.com/blob/master/_plugins/pygments_cache_patch.rb): Plugin to cache syntax-highlighted code from Pygments.
 - [Draft/Publish Plugin by Michael Ivey](https://gist.github.com/49630): Save posts as drafts.