build: clean cache before dev and build docs

Author: meteorlxy

package.json

@@ -10,9 +10,9 @@
     "copy": "lerna run copy --stream",
     "copy-watch": "lerna run copy --parallel -- --watch",
     "dev": "yarn copy-watch & yarn build --watch",
-    "docs:build": "vuepress build docs",
+    "docs:build": "vuepress build docs --clean-cache",
     "docs:clean": "rimraf docs/.vuepress/.temp docs/.vuepress/.cache docs/.vuepress/dist",
-    "docs:dev": "vuepress dev docs",
+    "docs:dev": "vuepress dev docs --clean-cache",
     "docs:serve": "anywhere -h localhost -d docs/.vuepress/dist",
     "postinstall": "yarn copy && yarn build",
     "lint": "cross-env NODE_OPTIONS=\"--max-old-space-size=4096\" eslint --ext .js,.ts,.vue .",