docs: update references of jsx support [ci skip]

Author: haoqunjiang

packages/@vue/babel-preset-app/README.md

@@ -29,9 +29,7 @@ If you need additional stage 3 or below features, you need to install and config
 ### Vue JSX support
 
 - [@babel/plugin-syntax-jsx](https://github.com/babel/babel/tree/master/packages/babel-plugin-syntax-jsx)
-- [babel-plugin-transform-vue-jsx](https://github.com/vuejs/babel-plugin-transform-vue-jsx)
-- ~~[babel-plugin-jsx-event-modifiers](https://github.com/nickmessing/babel-plugin-jsx-event-modifiers)~~ (temporarily disabled until fixed for Babel 7)
-- ~~[babel-plugin-jsx-v-model](https://github.com/nickmessing/babel-plugin-jsx-v-model)~~ (temporarily disabled until fixed for Babel 7)
+- [@vue/babel-preset-jsx](https://github.com/vuejs/jsx)
 
 ### [@babel/plugin-transform-runtime](https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-runtime)