Fix other broken links

found with https://github.com/tcort/markdown-link-check

Author: FloEdelmann

README.md

@@ -3,7 +3,7 @@
 [![NPM version](https://img.shields.io/npm/v/eslint-plugin-vue.svg?style=flat)](https://npmjs.org/package/eslint-plugin-vue)
 [![NPM downloads](https://img.shields.io/npm/dm/eslint-plugin-vue.svg?style=flat)](https://npmjs.org/package/eslint-plugin-vue)
 [![CircleCI](https://img.shields.io/circleci/project/github/vuejs/eslint-plugin-vue/master.svg?style=flat)](https://circleci.com/gh/vuejs/eslint-plugin-vue)
-[![License](https://img.shields.io/github/license/vuejs/eslint-plugin-vue.svg?style=flat)](https://github.com/vuejs/eslint-plugin-vue/blob/master/LICENSE.md)
+[![License](https://img.shields.io/github/license/vuejs/eslint-plugin-vue.svg?style=flat)](https://github.com/vuejs/eslint-plugin-vue/blob/master/LICENSE)
 
 > Official ESLint plugin for Vue.js
 

docs/rules/no-reserved-component-names.md

@@ -75,7 +75,7 @@ export default {
 - [List of html elements](https://developer.mozilla.org/en-US/docs/Web/HTML/Element)
 - [List of SVG elements](https://developer.mozilla.org/en-US/docs/Web/SVG/Element)
 - [Kebab case elements](https://stackoverflow.com/questions/22545621/do-custom-elements-require-a-dash-in-their-name/22545622#22545622)
-- [Valid custom element name](https://w3c.github.io/webcomponents/spec/custom/#valid-custom-element-name)
+- [Valid custom element name](https://html.spec.whatwg.org/multipage/custom-elements.html#valid-custom-element-name)
 - [API - Built-In Components](https://v3.vuejs.org/api/built-in-components.html)
 - [API (for v2) - Built-In Components](https://v2.vuejs.org/v2/api/index.html#Built-In-Components)
 

docs/rules/script-indent.md

@@ -117,7 +117,7 @@ This rule only checks `.vue` files and does not interfere with other `.js` files
 
 - [indent](https://eslint.org/docs/rules/indent)
 - [vue/html-indent](./html-indent.md)
-- [@typescript-eslint/indent](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/indent.md)
+- [@typescript-eslint/indent](https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/eslint-plugin/docs/rules/indent.md)
 
 ## :rocket: Version