* Recursive scp arguments reversed
The command to "copy [...] on a remote host to a local
directory" in the current scp tldr page was backwards.
scp arguments take the form `scp from to`.
* add the word from for clarity
* No double examples
* Replace IP address with hostname place holders.
* change word use to avoid upload & download
* alter two remote hosts example, to not require agent forwarding.
Add SFTP examples.
These 6 files had multiple examples all separated by a single newline.
While rendering it in markdown, the examples all come up in a single
line.
Adding another newline makes rendering better.
Also will help in easier copying (double click on the line to copy).
