Replace invalid documentation links

[strangesource]

Multiple places throughout the repository link the Module documentation. The link contains an additional /reference in the path and therefore produce a 404.

Old link:

https://kotlinlang.org/docs/reference/dokka-module-and-package-docs.html

New link:

https://kotlinlang.org/docs/dokka-module-and-package-docs.html

Should this be a temporary error on the kotlinlang website feel free to just close the PR.

[IgnatBeresnev]

Thanks for noticing and fixing this!

[IgnatBeresnev]

I got curious about why we had these invalid links. The information about module documentation was previously part of the KDoc page, and the link was https://kotlinlang.org/docs/reference/kotlin-doc.html#module-and-package-documentation.

If you follow that link, it'll redirect to https://kotlinlang.org/docs/kotlin-doc.html - so the /reference/ part was removed at some point, and it looks like the old link redirects to the new location to preserve compatibility.

However, when the information about module documentation was moved to a separate page, we changed only the name of the html file (kotlin-doc.html -> dokka-module-and-package-docs.html), without altering the base of the link itself. Thus a bug was born 😅

cc @sarahhaggarty JFYI :)