[web] use the new backlog Github project in triage links (flutter#151920)

https://github.com/orgs/flutter/projects/132 is going away.

https://github.com/orgs/flutter/projects/41 is the new project we use
for backlog tracking.

Author: yjbanov

docs/triage/Flutter-Web-Triage.md

@@ -1,8 +1,8 @@
 When triaging web issues follow the following process:
 
 - Make sure there are no [unassigned P0 and P1 issues](https://github.com/flutter/flutter/issues?q=is%3Aopen+is%3Aissue+label%3Ateam-web+label%3AP1%2CP0+no%3Aassignee).
-- Make sure there are no [P1 issues outside the backlog](https://github.com/flutter/flutter/issues?q=is%3Aopen+is%3Aissue+label%3Ateam-web+label%3AP1%2CP0+-project%3Aflutter%2F132+).
-- Make sure there are no [P3 issues in the backlog](https://github.com/flutter/flutter/issues?q=is%3Aopen+is%3Aissue+project%3Aflutter%2F132+label%3AP3).
+- Make sure there are no [P1 issues outside the backlog](https://github.com/flutter/flutter/issues?q=is%3Aopen+is%3Aissue+label%3Ateam-web+label%3AP1%2CP0+-project%3Aflutter%2F41+).
+- Make sure there are no [P3 issues in the backlog](https://github.com/flutter/flutter/issues?q=is%3Aopen+is%3Aissue+project%3Aflutter%2F41+label%3AP3).
 - Make sure there are no assigned P2 and P3 issues (if you'd like to become a regular Flutter Web contributor, please ping yjbanov on Discord to be added to this list, and we'll watch that your issues are properly triaged):
   - [ditman](https://github.com/flutter/flutter/issues?q=is%3Aopen+is%3Aissue+label%3Ateam-web+label%3AP2%2CP3+assignee%3Aditman)
   - [eyebrowsoffire](https://github.com/flutter/flutter/issues?q=is%3Aopen+is%3Aissue+label%3Ateam-web+label%3AP2%2CP3+assignee%3Aeyebrowsoffire)