refactor: Make code more readable

Author: KSXGitHub

build.sh

@@ -51,8 +51,12 @@ echo '::group::Publishing'
 git remote add aur "ssh://aur@aur.archlinux.org/${pkgname}.git"
 git add -fv PKGBUILD .SRCINFO
 case "$allow_empty_commits" in
-true) git commit --allow-empty -m "$commit_message" ;;
-false) git diff-index --quiet HEAD || git commit -m "$commit_message" ;; # use `git diff-index --quiet HEAD ||` to avoid error
+true)
+  git commit --allow-empty -m "$commit_message"
+  ;;
+false)
+  git diff-index --quiet HEAD || git commit -m "$commit_message" # use `git diff-index --quiet HEAD ||` to avoid error
+  ;;
 *)
   echo "::error::Invalid Value: inputs.allow_empty_commits is neither 'true' nor 'false': '$allow_empty_commits'"
   exit 2