fix: rename env file within ci.yml workflow

Author: Pythonian

.github/workflows/ci.yml

@@ -35,7 +35,7 @@ jobs:
           pip install -r requirements.txt
 
       - name: Copy env file
-        run: cp .env.sample .env
+        run: cp .env.example .env
 
       - name: Run app
         run: |