Swap the documentation for WindowsMapping and WindowsMappingVersion, which were inverted.
Swap the documentation for WindowsMapping and WindowsMappingVersion,
which were inverted.

jskeet/nodatime,zaccharles/nodatime,BenJenkinson/nodatime,malcolmr/nodatime,zaccharles/nodatime,malcolmr/nodatime,zaccharles/nodatime,malcolmr/nodatime,zaccharles/nodatime,zaccharles/nodatime,zaccharles/nodatime,nodatime/nodatime,BenJenkinson/nodatime,jskeet/nodatime,nodatime/nodatime,malcolmr/nodatime