Docs: Filtering Posts with categories, tags, or other variables (#6399)
Docs: Filtering Posts with categories, tags, or other variables (#6399)

Merge pull request 6399
Strangehill/jekyll,gencer/jekyll,Strangehill/jekyll,fulldecent/jekyll,gencer/jekyll,ryanshaw/jekyll,fulldecent/jekyll,jekyll/jekyll,tillgrallert/jekyll,fulldecent/jekyll,ryanshaw/jekyll,chrisfinazzo/jekyll,jaybe-jekyll/jekyll,tillgrallert/jekyll,gencer/jekyll,gencer/jekyll,x-way/jekyll,getandpost/jekyll.github.io,fulldecent/jekyll,Strangehill/jekyll,getandpost/jekyll.github.io,Strangehill/jekyll,x-way/jekyll,ryanshaw/jekyll,jaybe-jekyll/jekyll,x-way/jekyll,jaybe-jekyll/jekyll,tillgrallert/jekyll,chrisfinazzo/jekyll,getandpost/jekyll.github.io,jekyll/jekyll,jekyll/jekyll,tillgrallert/jekyll,yhironaka/yhironaka.github.io,Strangehill/jekyll,jekyll/jekyll,jaybe-jekyll/jekyll,gencer/jekyll,tillgrallert/jekyll,x-way/jekyll,ryanshaw/jekyll,chrisfinazzo/jekyll,chrisfinazzo/jekyll