Added details for indexing triage meeting (opensearch-project#14518)

Signed-off-by: Ankit Kala <[email protected]>

TRIAGING.md

@@ -14,7 +14,7 @@ Each meeting we seek to address all new issues. However, should we run out of ti
 
 ### How do I join a Triage meeting?
 
- Check the [OpenSearch Meetup Group](https://www.meetup.com/opensearch/) for the latest schedule and details for joining each meeting. Each component area has its own meetup series: [Search](https://www.meetup.com/opensearch/events/300929493/), [Storage](https://www.meetup.com/opensearch/events/299907409/), [Cluster Manager](https://www.meetup.com/opensearch/events/301082218/), and [Core](https://www.meetup.com/opensearch/events/301061009/).
+ Check the [OpenSearch Meetup Group](https://www.meetup.com/opensearch/) for the latest schedule and details for joining each meeting. Each component area has its own meetup series: [Search](https://www.meetup.com/opensearch/events/300929493/), [Storage](https://www.meetup.com/opensearch/events/299907409/), [Cluster Manager](https://www.meetup.com/opensearch/events/301082218/), [Indexing](https://www.meetup.com/opensearch/events/301734024/), and [Core](https://www.meetup.com/opensearch/events/301061009/).
 
 After joining the virtual meeting, you can enable your video / voice to join the discussion.  If you do not have a webcam or microphone available, you can still join in via the text chat.
 
@@ -29,9 +29,10 @@ Meeting structure may vary slightly, but the general structure is as follows:
 3. **Announcements:** Any announcements will be made at the beginning of the meeting.
 4. **Review of New Issues:** We start by reviewing all untriaged issues. Each meeting has a label-based search to find relevant issues:
    - [Search](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)
+   - [Indexing](https://github.com/opensearch-project/OpenSearch/issues?q=is%3Aissue+is%3Aopen+label%3Auntriaged+label%3A%22Indexing%3AReplication%22%2C%22Indexing%22%2C%22Indexing%3APerformance%22%2C%22Indexing+%26+Search%22%2C)
    - [Storage](https://github.com/opensearch-project/OpenSearch/issues?q=is%3Aissue+is%3Aopen+label%3Auntriaged+label%3AStorage%2C%22Storage%3AResiliency%22%2C%22Storage%3APerformance%22%2C%22Storage%3ASnapshots%22%2C%22Storage%3ARemote%22%2C%22Storage%3ADurability%22)
    - [Cluster Manager](https://github.com/opensearch-project/OpenSearch/issues?q=is%3Aissue+is%3Aopen+label%3Auntriaged+label%3A%22Cluster+Manager%22%2C%22ClusterManager%3ARemoteState%22)
-   - [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)
+   - [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).