JBIDE-16260 : fix plugin -> plug-in typos

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-16260 : fix missing fullstop

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-16287 : properly update warning component after settings.xml update

Signed-off-by: Fred Bricon <fbricon@gmail.com>