proper name for luacheck workflow

.github/workflows/luacheck.yml

@@ -1,5 +1,5 @@
 on: [push, pull_request]
-name: Check & Release
+name: luacheck
 jobs:
   lint:
     runs-on: ubuntu-latest
@@ -8,4 +8,4 @@ jobs:
       - name: lint
         uses: Roang-zero1/factorio-mod-luacheck@master
         with:
-          luacheckrc_url: https://raw.githubusercontent.com/minetest-mods/technic/master/.luacheckrc
+          luacheckrc_url: ""

README.md

@@ -0,0 +1,2 @@
+![](https://github.com/mt-mods/wrench/workflows/luacheck/badge.svg)
+[![License](https://img.shields.io/badge/license-LGPLv2.0%2B-purple.svg)](https://www.gnu.org/licenses/old-licenses/lgpl-2.0.en.html)