Adding ldoc-custom and its styles to be used by docs.yml

Author: TechTastic

.github/workflows/docs.yml

@@ -20,6 +20,12 @@ jobs:
         sudo apt-get update
         sudo apt-get install -y lua5.3 liblua5.3-dev luarocks
     
+    - name: Install ldoc-custom and styles
+      run: |
+        git clone https://github.com/sontungexpt/ldoc-css-styles.git && cd ldoc-css-styles
+        cp ldoc-custom /usr/bin/
+        cd ..
+    
     - name: Install LDoc
       run: sudo luarocks install ldoc