Minor tweaks/fixes on error display for git stree forget when passed …

…an arg

git-stree

@@ -144,12 +144,15 @@ function error
 function forget_subtrees
 {
  if [ -n "${args[1]}" ]; then
- error false "This is not the command you're looking for.
- git stree forget removes all subtrees defined for this repository.
- You specified a specific subtree ($1) on the command line,
- so you probably want: git stree rm $1
- "
+ error false "This is not the command you're looking for.
+
+git stree forget removes all subtrees defined for this repository. You
+specified a specific subtree (${args[1]}) on the command line, so you probably
+want:
+
+ git stree rm ${args[1]}"
  fi
+
  for name in $(get_subtree_list simple); do
  rm_subtree "$name" && discreet "• Removed subtree '$name'"
  done