[improvement] update sub-packages name (#2306)

package.json

@@ -72,8 +72,10 @@
     "@babel/plugin-transform-runtime": "^7.1.0",
     "@babel/polyfill": "^7.0.0",
     "@babel/preset-env": "^7.1.6",
+    "@vant/compiler": "^1.0.0",
     "@vant/doc": "^1.0.20",
     "@vant/eslint-config": "^1.0.7",
+    "@vant/markdown-loader": "^1.0.3",
     "@vue/server-test-utils": "^1.0.0-beta.26",
     "@vue/test-utils": "^1.0.0-beta.26",
     "autoprefixer": "^9.3.1",
@@ -86,9 +88,8 @@
     "dependency-tree": "^6.3.0",
     "eslint": "^5.9.0",
     "fast-glob": "^2.2.4",
-    "fast-vue-md-loader": "^1.0.3",
     "gh-pages": "^2.0.1",
-    "gulp": "^4.0.0",
+    "gulp": "3.9.1",
     "gulp-csso": "^3.0.1",
     "gulp-less": "^4.0.1",
     "gulp-postcss": "^8.0.0",
@@ -116,7 +117,6 @@
     "vue-loader": "^15.4.2",
     "vue-router": "^3.0.2",
     "vue-server-renderer": "^2.5.17",
-    "vue-sfc-compiler": "^0.1.3",
     "vue-template-compiler": "2.5.21",
     "vue-template-es2015-compiler": "^1.6.0",
     "webpack": "^4.26.1",