fix: ci

.github/workflows/quality.yaml

@@ -1,6 +1,7 @@
 name: quality
 
 on:
+  workflow_call:
   pull_request:
     branches: [main]
   push:

README.md

@@ -34,6 +34,12 @@ Using [lazy.nvim](https://github.com/folke/lazy.nvim):
 }
 ```
 
+Or via [luarocks](https://luarocks.org/modules/barrettruth/diffs.nvim):
+
+```
+luarocks install diffs.nvim
+```
+
 ## Documentation
 
 ```vim