feat(commit-git-folder): clarify variable names in empty checks and update prompt for consistent help documentation

bin/commit-git-folder

@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 
 commit-git-folder() {
-    if [[ -z "$1" ]]; then echo "\$1 is empty."; exit; fi
-    if [[ -z "$2" ]]; then echo "\$2 is empty."; exit; fi
+    if [[ -z "$1" ]]; then echo "\$1/path is empty."; exit; fi
+    if [[ -z "$2" ]]; then echo "\$2/message is empty."; exit; fi
     local git_folders=$(ls-git-folder "$1")
 
     for git_folder in $git_folders; do