This commit changes the term "folder" to "directory" in every
instance where the first is used in an example description, but the
second is used in the example code, and vice versa.
* 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).
