docs: update

pash

@@ -56,6 +56,10 @@ pw_add() {
 pw_del() {
     yn "Delete pass file '$1'?" && {
         rm -f "$1.gpg"
+
+        # Remove empty parent directories of a password
+        # entry. It's fine if this fails as it means that
+        # another entry also lives in the same directory.
         rmdir -p "${1%/*}" 2>/dev/null
     }
 }