Fix link on docs

[halitogunc]

Some of the links take you to the wrong url which does not exist. This PR fixes it hopefully.

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[timdorr]

Thanks!

[markerikson]

This seems wrong and hacky to me.

The docs links are supposed to be based on the Markdown file paths, not the final web URL links.

I did note that we had some issues with relative file links when I was fixing up the hooks docs page for final release last night. @endiliey pointed out that Docusaurus really doesn't like relative links - they should be absolute instead.

Can we get another PR that changes all these links to be absolute instead? Like using-react-redux/connect-extracting-data-with-mapStateToProps.md, I think.

[halitogunc]

I did not know that Docusaurus has some issues with relative link, but it makes sense to use absolute links instead of relative ones.

I will prepare another PR that applies these changes. @markerikson

[halitogunc]

I am a bit confused about that topic. I don't have much experience on Docusaurus but its structure looks so dependent to relative links. Also there is an open issue regarding docs #1001. I might be missing something, need guidance 😄 . On the other hand we can keep the docs as it is and fix it on referenced issue above.