cleanup doc

Author: mcchrish

doc/nnn.txt

@@ -45,14 +45,13 @@ buffer opens running an n³ process in picker mode.
 Once you select (see https://github.com/jarun/nnn/wiki/concepts#selection)
 one or more files and press enter, vim quits the n³ window and opens the
 first selected file and add the remaining files to the arg list/buffer
-list. If |nnn#session| is enabled, then n³ will remember where you left off
-of when you reopen it.
+list. If |nnn#session| is enabled, then n³ will remember where you left off of
+when you reopen it.
 
-Pressing enter on a file in n³ will pick any earlier selection, pick
-the file and exit n³.
+Pressing enter on a file in n³ will pick any earlier selection, pick the file
+and exit n³.
 
-Note that pressing <kbd>l</kbd> or <kbd>Right</kbd> on a file would open it
-instead of picking.
+Note that pressing `l` or <Right> on a file would open it instead of picking.
 
 You may have to set `set hidden` to make floating window work.