[8.10] [DOCS] Add 8.10.1 release notes (#166549) (#166633)

# Backport

This will backport the following commits from `main` to `8.10`:
- [[DOCS] Add 8.10.1 release notes
(#166549)](#166549)

<!--- Backport version: 8.9.7 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

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Add 8.10.1 release notes
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Add 8.10.1 release notes
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Add 8.10.1 release notes
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Co-authored-by: James Rodewig <[email protected]>

docs/CHANGELOG.asciidoc

@@ -14,6 +14,7 @@ endif::[]
 
 Review important information about the {kib} 8.x releases.
 
+* <<release-notes-8.10.1>>
 * <<release-notes-8.10.0>>
 * <<release-notes-8.9.2>>
 * <<release-notes-8.9.1>>
@@ -52,6 +53,26 @@ Review important information about the {kib} 8.x releases.
 * <<release-notes-8.0.0-alpha1>>
 
 --
+[[release-notes-8.10.1]]
+== {kib} 8.10.1
+
+The 8.10.1 release includes the following bug fixes.
+
+[float]
+[[fixes-v8.10.1]]
+=== Bug Fixes
+
+Dashboard::
+* Fixes content editor flyout footer ({kibana-pull}165907[#165907]).
+Elastic Security::
+For the Elastic Security 8.10.1 release information, refer to {security-guide}/release-notes.html[_Elastic Security Solution Release Notes_].
+Fleet::
+* Show snapshot version in agent upgrade modal and allow custom values ({kibana-pull}165978[#165978]).
+Observability::
+* Fix(slo): Use comma-separarted list of source index for transform ({kibana-pull}166294[#166294]).
+Presentation::
+* Fixes air-gapped enviroment hitting `400` error when loading fonts for layer ({kibana-pull}165986[#165986]).
+
 [[release-notes-8.10.0]]
 == {kib} 8.10.0