backport: bitcoin/bitcoin#27176: docs: GetDataDirNet and GetDataDirBase don't create datadir

[knst]

Issue being fixed or feature implemented

Since bitcoin#27073 (backported via #6780), the behaviour of GetDataDir() changed to only return the datadir path, but not create it if non-existent. This also changed the behaviour of GetDataDirNet() and GetDataDirBase() but the docs do not yet reflect that.

How Has This Been Tested?

N/A

Breaking Changes

N/A

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have made corresponding changes to the documentation
• I have assigned this pull request to a milestone (for repository code-owners and collaborators only)

[github-actions]

✅ No Merge Conflicts Detected

This PR currently has no conflicts with other open PRs.

[coderabbitai]

Walkthrough

This change removes specific postcondition comments from the documentation of two methods in the ArgsManager class: GetDataDirBase() and GetDataDirNet(). The deleted comments previously indicated that the returned directory path would be created unless it was empty. No modifications were made to the method implementations or their signatures; only the documentation comments were altered.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

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📒 Files selected for processing (1)

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[UdjinM6]

utACK c5b325a

[PastaPastaPasta]

utACK c5b325a