Add release notes 2.11 (#5210)

* Add release notes 2.11

Signed-off-by: Fanit Kolchina <[email protected]>

* Update release notes because log types PR is merged

Signed-off-by: Fanit Kolchina <[email protected]>

* Apply suggestions from code review

Co-authored-by: Melissa Vagi <[email protected]>
Signed-off-by: kolchfa-aws <[email protected]>

---------

Signed-off-by: Fanit Kolchina <[email protected]>
Signed-off-by: kolchfa-aws <[email protected]>
Co-authored-by: Melissa Vagi <[email protected]>

release-notes/opensearch-documentation-release-notes-2.11.0.md

@@ -0,0 +1,19 @@
+# OpenSearch Documentation Website 2.11.0 Release Notes
+
+The OpenSearch 2.11.0 documentation includes the following additions and updates.
+
+## New documentation for 2.11.0
+
+- Add Conversational Search changes for 2.11 [#5195](https://github.com/opensearch-project/documentation-website/pull/5195)
+- Remove warning about alerting and segment replication compatibility  [#5191](https://github.com/opensearch-project/documentation-website/pull/5191)
+- Add documentation for log type categories [#5181](https://github.com/opensearch-project/documentation-website/pull/5181)
+- Add updates to creating a detector UX [#5176](https://github.com/opensearch-project/documentation-website/pull/5176)
+- Add multimodal search/sparse search/pre- and post-processing function documentation [#5168](https://github.com/opensearch-project/documentation-website/pull/5168)
+- Add documentation for new recovery setting [#5162](https://github.com/opensearch-project/documentation-website/pull/5162)
+- Add terminate after behavior to concurrent segment search [#5143](https://github.com/opensearch-project/documentation-website/pull/5143)
+- Add documentation for configurable merge policy [#5137](https://github.com/opensearch-project/documentation-website/pull/5137)
+- Remove experimental header from search comparison tool [#5124](https://github.com/opensearch-project/documentation-website/pull/5124)
+- Add documentation about setting a default model for neural search [#5121](https://github.com/opensearch-project/documentation-website/pull/5121)
+- Add total wait time to thread pool in nodes stats [#5120](https://github.com/opensearch-project/documentation-website/pull/5120)
+- Add new documentation for distributed tracing [#4964](https://github.com/opensearch-project/documentation-website/pull/4964)
+- Add documentation for authorization on the REST layer [#4544](https://github.com/opensearch-project/documentation-website/pull/4544)