Add ssh config info

_episodes/11-connecting.md

@@ -80,7 +80,7 @@ It is also possible that a host key has just been changed.
 ```
 {: .language-bash}
 
-To avoid this error, open the file ``~/.ssh/config` on your computer  and place the
+To avoid this error, open the file `~/.ssh/config` on your computer  and place the
 following lines in it:
 ```
 Host greene.hpc.nyu.edu dtn.hpc.nyu.edu
@@ -95,7 +95,7 @@ Host greene.hpc.nyu.edu dtn.hpc.nyu.edu
 
 Additionally, some people may experience connection warnings while connecting to Greene,
  and connections being terminated too soon.This can be addressed by entering the
-following into ``~/.ssh/config` file:
+following into `~/.ssh/config` file:
 ```
 # Increase alive interval
   host *.hpc.nyu.edu