chore: fix links (#1540)

Author: kazupon

packages/@vue/cli-plugin-e2e-cypress/README.md

@@ -36,7 +36,7 @@ We've pre-configured Cypress to place most of the e2e testing related files unde
 
 ## Environment Variables
 
-Cypress doesn't load .env files for your test files the same way as `vue-cli` does for your [application code](https://github.com/vuejs/vue-cli/blob/dev/docs/env.md#using-env-variables-in-client-side-code). Cypress supports a few ways to [define env variables](https://docs.cypress.io/guides/guides/environment-variables.html#) but the easiest one is to use .json files (either `cypress.json` or `cypress.env.json`) to define environment variables. Keep in mind those variables are accessible via `Cypress.env` function instead of regular `process.env` object.
+Cypress doesn't load .env files for your test files the same way as `vue-cli` does for your [application code](https://cli.vuejs.org/guide/mode-and-env.html#using-env-variables-in-client-side-code). Cypress supports a few ways to [define env variables](https://docs.cypress.io/guides/guides/environment-variables.html#) but the easiest one is to use .json files (either `cypress.json` or `cypress.env.json`) to define environment variables. Keep in mind those variables are accessible via `Cypress.env` function instead of regular `process.env` object.
 
 ## Installing in an Already Created Project
 

packages/@vue/cli-service/generator/template/src/components/HelloWorld.vue

@@ -4,7 +4,7 @@
     <p>
       For guide and recipes on how to configure / customize this project,<br>
       check out the
-      <a href="https://github.com/vuejs/vue-cli/tree/dev/docs" target="_blank">vue-cli documentation</a>.
+      <a href="https://cli.vuejs.org" target="_blank">vue-cli documentation</a>.
     </p>
     <h3>Installed CLI Plugins</h3>
     <ul>

packages/@vue/cli-ui/src/components/StatusBar.vue

@@ -143,7 +143,7 @@ export default {
 
     onTranslateClick () {
       const win = window.open(
-        'https://github.com/vuejs/vue-cli/tree/dev/docs/localization.md',
+        'https://cli.vuejs.org/dev-guide/ui-plugin-dev.html#localization',
         '_blank'
       )
       win.focus()

packages/@vue/cli-ui/src/views/About.vue

@@ -12,7 +12,7 @@
 
     <div class="links vue-ui-grid default-gap">
       <VueButton href="https://github.com/vuejs/vue-cli" target="_blank">Repository</VueButton>
-      <VueButton href="https://github.com/vuejs/vue-cli/tree/dev/docs#table-of-contents" target="_blank">Documentation</VueButton>
+      <VueButton href="https://cli.vuejs.org" target="_blank">Documentation</VueButton>
       <VueButton href="https://vuejs.org/v2/guide/" target="_blank">Vue.js Guide</VueButton>
       <VueButton href="https://vuejs.org/v2/api/" target="_blank">Vue.js API reference</VueButton>
       <VueButton href="https://forum.vuejs.org/" target="_blank">Vue.js Forums</VueButton>

packages/@vue/cli/lib/promptModules/unit.js

@@ -4,7 +4,7 @@ module.exports = cli => {
     value: 'unit',
     short: 'Unit',
     description: 'Add a Unit Testing solution like Jest or Mocha',
-    link: 'https://github.com/vuejs/vue-cli/tree/dev/docs#unit-testing',
+    link: 'https://cli.vuejs.org/config/#unit-testing',
     plugins: ['unit-jest', 'unit-mocha']
   })