Update test-docker-image.yml

Author: wangsrGit119

.github/workflows/test-docker-image.yml

@@ -36,4 +36,4 @@ jobs:
         name: Generate App Version
         run: echo APP_VERSION=`git tag --sort=-v:refname | head -n 1`-muti >> $GITHUB_ENV
       - name: Print APP_VERSION
-        run: echo "APP_VERSION=$APP_VERSION"
+        run: echo "$APP_VERSION"