docs: use HTTPS for StackOverflow webpack tag link

Author: mr-baraiya

src/content/awesome-webpack.mdx

@@ -17,7 +17,7 @@ A curated list of awesome webpack resources, libraries, tools and applications.
 
 ### Community
 
-- [StackOverflow](http://stackoverflow.com/tags/webpack)
+- [StackOverflow](https://stackoverflow.com/tags/webpack)
 - [Medium](https://medium.com/tag/webpack)
 - [Gitter Chat](https://gitter.im/webpack/webpack)