chore: 修改element-ui ： ^2.14.1

Author: weilei

packages/element-ui-x/package.json

@@ -54,7 +54,7 @@
     "publish:lib": "npm publish"
   },
   "peerDependencies": {
-    "element-ui": "2.15.14",
+    "element-ui": "^2.14.1",
     "vue": "^2.6.14"
   },
   "devDependencies": {