Bug#1141562: devscripts: man debian-watch: missing doc about Version-Type: STABLE_VERSION

[Jérémy Lal]

Package: devscripts
Version: 2.26.9
Severity: normal

This undocumented feature:
Version-Type: STABLE_VERSION

is used in many packages
https://codesearch.debian.net/search?q=Version-Type%3A+STABLE_VERSION+path%3Adebian%2Fwatch&literal=0