fixed typos found by RETF rules in RST files

rules are avaialble at https://en.wikipedia.org/wiki/Wikipedia:AutoWikiBrowser/Typos
Merge pull request #7267 from berendt/retf

fixed typos found by RETF rules in RST files
Make --ask-sudo-pass/-K imply --sudo for `ansible`
Refine previous fix ('Make --ask-sudo-pass/-K imply --sudo for `ansible`').

(This essentially reverts 70f4e0807c28628786601e76ca9ccb27d6807284)