docs: update grunt-webpack repository links (#7748)

Author: Kritank07

src/content/guides/integrations.mdx

@@ -51,7 +51,7 @@ module.exports = function (grunt) {
 };
 ```
 
-For more information, please visit the [repository](https://github.com/webpack/grunt-webpack).
+For more information, please visit the [repository](https://github.com/danez/grunt-webpack).
 
 ## Gulp