Update docs with actions listing info, correct formatting issues.
Update docs with actions listing info, correct formatting issues.

samphilipd/github,cocktail-io/github,firstval/github,durai145/github,yaoxiaoyong/github,befairyliu/github,anabhilash619/github,peter-murach/github,wicky-info/github,piotrmurach/github,davengeo/github,GistBox/github,joshsoftware/github,MalachiTatum/github