This commit fixes a really old grammar error in the help message of the
message_needaction_counter field.
Before this commit: “Number of messages which requires an action”
After: “Number of messages requiring action”
The subject of “require” is “messages”, which is third-person plural, so
it can't take the -s suffix.
closesodoo/odoo#129468
X-original-commit: 0d10cfeaa56d5df23df05f436d353978043f4a71
Related: odoo/enterprise#44509
Signed-off-by: Louis Wicket (wil) <wil@odoo.com>