No code changes.
There is exactly one blank line insertion, and it makes this TypedefRuleDb documentation inconsistent with, say, the VariableRuleDb, which doesn't have blank lines in the same spot. Should it? If yes, then please just create a commit which adds the blank lines where the blank lines should be and does not do anything else. That would be a commit which is easily and quickly reviewable. I've said this a few times but it seems to be something you are still not doing.