In /usr/ports/UPDATING all sections, which contain "database/..." instead of "databases/..." in the 'AFFECTS:' line, utilities like 'pkg updating' can't automatically display those sections.
The postgresql sections in particular have information that would be useful for casual use of "pkg updating". One work-around, of course, is to use "pkg updating database/postgresql"
This is from PR 249881, submitted by Keith White
While here, also correct some more occurrences.