Simplify Dokka source link configuration

[whyoleg]

Based on discussion: Kotlin/kotlinx-datetime#323 (comment)

Checked locally - content is identical for both approaches

[dkhalanskyjb]

Thank you for remembering to cleanup the code in other repositories! After seeing the discussion in kotlinx-datetime, I went here to adapt the fix and was glad that someone's already done it!

I compared the HTML files and did find a difference, but it doesn't seem meaningful. I don't even understand it. In several files, <code class="org.jetbrains.dokka.pages.commenttable@2c36c6b1 lang-kotlin"> was replaced with <code class="org.jetbrains.dokka.pages.commenttable@37650479 lang-kotlin">. No idea what this means, but thought I should bring it up just in case.

[whyoleg]

Yeah, I've also compared the content locally. This is expected, but unobvious change :)
This is coming from calling Style::toString() somewhere in Dokka code...
This specific string is for CommentTable style. And as it's an object we have hashCode in toString.

Overall this specific Style object should not be present in HTML at all, but just used for some logic branching...
So, it's safe change, I believe some time in the future we will cleanup such things.

[whyoleg]

Sorry, accidentally pushed another changes to wrong branch - force pushed back to previous commit