Fix typo in doxygen comment.
Add 'invalidateblock' and 'reconsiderblock' RPC commands.

These can be used for testing reorganizations or for manual intervention in case of
chain forks.
Delay writing block indexes in invalidate/reconsider
Introduce a hidden category
Move `setmocktime` to hidden category

Another testing-only potential footgun command.
Merge pull request #5316

f86a24b Move `setmocktime` to hidden category (Wladimir J. van der Laan)
bd9aebf Introduce a hidden category (Pieter Wuille)
0dd06b2 Delay writing block indexes in invalidate/reconsider (Pieter Wuille)
9b0a8d3 Add 'invalidateblock' and 'reconsiderblock' RPC commands. (Pieter Wuille)
Merge pull request #5365

3a05ba1 Fix typo in doxygen comment. (Pavel Janík)