Update old untriaged workflow to better issue url (#15086)

GitHub doesn't suport dynamic days since created/modified, I've created
a simple redirect on my website that will support this use case. See
https://peternied.github.io/redirect/issue_search.html for full context
on what is avaliable.

Source is available on https://github.com/peternied/peternied.github.io

Signed-off-by: Peter Nied <[email protected]>

TRIAGING.md

@@ -35,7 +35,7 @@ Meeting structure may vary slightly, but the general structure is as follows:
    - [Core](https://github.com/opensearch-project/OpenSearch/issues?q=is%3Aissue+is%3Aopen+label%3Auntriaged+-label%3A%22Search%22%2C%22Search%3ARemote+Search%22%2C%22Search%3AResiliency%22%2C%22Search%3APerformance%22%2C%22Search%3ARelevance%22%2C%22Search%3AAggregations%22%2C%22Search%3AQuery+Capabilities%22%2C%22Search%3AQuery+Insights%22%2C%22Search%3ASearchable+Snapshots%22%2C%22Search%3AUser+Behavior+Insights%22%2C%22Storage%22%2C%22Storage%3AResiliency%22%2C%22Storage%3APerformance%22%2C%22Storage%3ASnapshots%22%2C%22Storage%3ARemote%22%2C%22Storage%3ADurability%22%2C%22Cluster+Manager%22%2C%22ClusterManager%3ARemoteState%22%2C%22Indexing%3AReplication%22%2C%22Indexing%22%2C%22Indexing%3APerformance%22%2C%22Indexing+%26+Search%22)
 5. **Attendee Requests:** An opportunity for any meeting member to request consideration of an issue or pull request.
 6. **Open Discussion:** Attendees can bring up any topics not already covered by filed issues or pull requests.
-7. **Review of Old Untriaged Issues:** Time permitting, each meeting will look at all [untriaged issues older than 14 days](https://github.com/opensearch-project/OpenSearch/issues?q=is%3Aissue+is%3Aopen+label%3Auntriaged+created%3A%3C2024-05-20) to prevent issues from falling through the cracks (note the GitHub API does not allow for relative times, so the date in this search must be updated every meeting).
+7. **Review of Old Untriaged Issues:** Look at all [untriaged issues older than 14 days](https://peternied.github.io/redirect/issue_search.html?owner=opensearch-project&repo=OpenSearch&tag=untriaged&created-since-days=14) to prevent issues from falling through the cracks.
 
 ### What is the role of the facilitator?