chore: fix docker pull version tag in TG notification

Use ${VERSION} (without v prefix) instead of ${TAG_NAME} to match
GoReleaser's actual Docker image tags.

.github/workflows/release.yml

@@ -246,10 +246,10 @@ jobs:
           if [ -n "$DOCKERHUB_USERNAME" ]; then
             DOCKER_IMAGE="${DOCKERHUB_USERNAME}/sub2api"
             MESSAGE+="# Docker Hub"$'\n'
-            MESSAGE+="docker pull ${DOCKER_IMAGE}:${TAG_NAME}"$'\n'
+            MESSAGE+="docker pull ${DOCKER_IMAGE}:${VERSION}"$'\n'
             MESSAGE+="# GitHub Container Registry"$'\n'
           fi
-          MESSAGE+="docker pull ${GHCR_IMAGE}:${TAG_NAME}"$'\n'
+          MESSAGE+="docker pull ${GHCR_IMAGE}:${VERSION}"$'\n'
           MESSAGE+="\`\`\`"$'\n'$'\n'
           MESSAGE+="🔗 *相关链接:*"$'\n'
           MESSAGE+="• [GitHub Release](https://github.com/${REPO}/releases/tag/${TAG_NAME})"$'\n'