Update CONTRIBUTING.md

Signed-off-by: Alexa Kreizinger <[email protected]>

CONTRIBUTING.md

@@ -41,9 +41,9 @@ within a few minutes.
 
 If you open a pull request that requires ongoing discussion or review, the
 Fluent Bit maintainers will add a [`waiting-for-user` tag](#tags) to your pull
-request. This tag means that we're blocked from moving forward until you reply;
-to keep contributions from going stale, we'll wait [three weeks?] for your response,
-and close the pull request if we don't hear back from you.
+request. This tag means that we're blocked from moving forward until you reply.
+To keep contributions from going stale, we'll wait 45 days for your response,
+but we may close the pull request if we don't hear back from you by then.
 
 ## Submit a contribution