fix CI

Author: Yejun Su

.github/workflows/main.yml

@@ -13,8 +13,10 @@ jobs:
         with:
           elixir-version: 1.10.4
           otp-version: 23.0.4
-      - mix deps.get
-      - mix format --check-formatted
+      - name: Install dependencies
+        run: mix deps.get
+      - name: Check format
+        run: mix format --check-formatted
 
   test:
     runs-on: ubuntu-latest
@@ -39,5 +41,7 @@ jobs:
         with:
           elixir-version: ${{matrix.pair.elixir}}
           otp-version: ${{matrix.pair.otp}}
-      - mix deps.get
-      - mix test
+      - name: Install dependencies
+        run: mix deps.get
+      - name: Run tests
+        run: mix test