Improve help text for -d flag

Fixes GH-202.

man/exa.1.md

@@ -84,7 +84,7 @@ FILTERING AND SORTING OPTIONS
 Use this twice to also show the ‘`.`’ and ‘`..`’ directories.
 
 `-d`, `--list-dirs`
-: List directories like regular files.
+: List directories as regular files, rather than recursing and listing their contents.
 
 `-L`, `--level=DEPTH`
 : Limit the depth of recursion.

src/options/help.rs

@@ -27,7 +27,7 @@ DISPLAY OPTIONS
 
 FILTERING AND SORTING OPTIONS
   -a, --all                  show hidden and 'dot' files
-  -d, --list-dirs            list directories like regular files
+  -d, --list-dirs            list directories as files; don't list their contents
   -L, --level DEPTH          limit the depth of recursion
   -r, --reverse              reverse the sort order
   -s, --sort SORT_FIELD      which field to sort by

xtests/outputs/help.ansitxt

@@ -20,7 +20,7 @@ DISPLAY OPTIONS
 
 FILTERING AND SORTING OPTIONS
   -a, --all                  show hidden and 'dot' files
-  -d, --list-dirs            list directories like regular files
+  -d, --list-dirs            list directories as files; don't list their contents
   -L, --level DEPTH          limit the depth of recursion
   -r, --reverse              reverse the sort order
   -s, --sort SORT_FIELD      which field to sort by