Update comments in chain to be doxygen compatible
Update comments in chainparams to be doxygen compatible
Update generate-seeds.py to produce doxygen compatible comments
Merge pull request #5142

02fe12d Update generate-seeds.py to produce doxygen compatible comments (Michael Ford)
f2e03ff Update comments in chainparams to be doxygen compatible (Michael Ford)
2fdc335 Update comments in chain to be doxygen compatible (Michael Ford)