action: change name to unit test

Signed-off-by: Yadong Ding <ding_yadong@foxmail.com>

.github/workflows/unit-test.yml

@@ -20,6 +20,6 @@ jobs:
       with:
         go-version-file: go.mod
 
-    - name: Build Accel
+    - name: Unit Test
       run: |
         go test -v -count=1 ./pkg/...