fix pub script error

package.json

@@ -176,7 +176,7 @@
     "start:preact": "node ./scripts/generateColorLess.js && cross-env NODE_ENV=development REACT_ENV=preact bisheng start -c ./site/bisheng.config.js --no-livereload",
     "site": "cross-env NODE_ENV=production bisheng build --ssr -c ./site/bisheng.config.js",
     "deploy": "antd-tools run clean && npm run site && node ./scripts/generateColorLess.js && bisheng gh-pages --push-only",
-    "pub": "antd-tools run pub --npm-tag=2.x",
+    "pub": "antd-tools run pub --npm-tag=latest-2",
     "prepublish": "antd-tools run guard",
     "pre-publish": "npm run test-all && node ./scripts/prepub",
     "authors": "git log --format='%aN <%aE>' | sort -u | grep -v 'users.noreply.github.com' | grep -v 'gitter.im' | grep -v '.local>' | grep -v 'alibaba-inc.com' | grep -v 'alipay.com' | grep -v 'taobao.com' > AUTHORS.txt",