Fix flag names
Updated SSH example to ensure it continues working

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)
Remove `$` leaders from examples of editing text in a file

not everything that is indented is a commandline example

Closes #6591

Docker-DCO-1.1-Signed-off-by: SvenDowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
Merge pull request #6611 from SvenDowideit/remove-spurious-dollar-signs

Remove `$` leaders from examples of editing text in a file
Merge pull request #6583 from jamtur01/sshd

Updated SSH example to ensure it continues working
Merge pull request #6536 from dgageot/patch-2

Fix flag names