If this is for software developers, Notion also belongs to trash. It is slow to use, you need to click for everything etc.

The best documentation is straight in the code file: module documentation at top, then method documentation for each method with a simple example / doc test showing what is the input-output relationship, the second best is an .md file in same repo etc. the more friction you add the worse you make this process for software developers (Jira / Confluence as the king dog shit of documentation process - these are not for developers these are for people who need job security).