docs: fix links in changelog

Author: haoqunjiang

CHANGELOG.md

@@ -4,7 +4,7 @@
 
 ### Bug Fixes
 
-* add rule plugins to keep up with webpack 5 new features ([7ca8e2c](https://github.com/vuejs/vue-loader/commit/7ca8e2c)), closes [/github.com/webpack/webpack/blob/v5.3.1/lib/NormalModuleFactory.js#L133-L152](https://github.com//github.com/webpack/webpack/blob/v5.3.1/lib/NormalModuleFactory.js/issues/L133-L152)
+* add rule plugins to keep up with webpack 5 new features ([7ca8e2c](https://github.com/vuejs/vue-loader/commit/7ca8e2c))
 * ensure new webpack5 generator property in rules passes ruleset checks ([#1753](https://github.com/vuejs/vue-loader/issues/1753)) ([f79bb08](https://github.com/vuejs/vue-loader/commit/f79bb08)), closes [#1729](https://github.com/vuejs/vue-loader/issues/1729)