Update documentation workflow to include package list update before installing gcc-multilib (#64)

Author: AlixANNERAUD

.github/workflows/Documentation.yml

@@ -28,7 +28,7 @@ jobs:
           key: "Documentation"
 
       - name: Setup | Install GCC multilib
-        run: sudo apt-get install gcc-multilib
+        run: sudo apt update && sudo apt install gcc-multilib
 
       - name: Setup | Rust stable toolchain
         uses: dtolnay/rust-toolchain@stable