[8.13] Update stability.asciidoc (#187294) (#187299)

# Backport

This will backport the following commits from `main` to `8.13`:
- [Update stability.asciidoc
(#187294)](#187294)

<!--- Backport version: 9.4.3 -->

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

<!--BACKPORT
[{"author":{"name":"Pius","email":"[email protected]"},"sourceCommit":{"committedDate":"2024-07-01T18:41:32Z","message":"Update
stability.asciidoc (#187294)\n\nRemoved unnecessary line that is a
copy/paste error.\r\nPlease backport to all relevant
versions.","sha":"91b59bfc2eb48a1c547db35c1a1e6bc82cf7b6de","branchLabelMapping":{"^v8.15.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["Team:Docs","release_note:skip","backport:all-open","v8.13.0","v8.14.0","v8.15.0"],"title":"Update
stability.asciidoc","number":187294,"url":"https://github.com/elastic/kibana/pull/187294","mergeCommit":{"message":"Update
stability.asciidoc (#187294)\n\nRemoved unnecessary line that is a
copy/paste error.\r\nPlease backport to all relevant
versions.","sha":"91b59bfc2eb48a1c547db35c1a1e6bc82cf7b6de"}},"sourceBranch":"main","suggestedTargetBranches":["8.13","8.14"],"targetPullRequestStates":[{"branch":"8.13","label":"v8.13.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"8.14","label":"v8.14.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"main","label":"v8.15.0","branchLabelMappingKey":"^v8.15.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/187294","number":187294,"mergeCommit":{"message":"Update
stability.asciidoc (#187294)\n\nRemoved unnecessary line that is a
copy/paste error.\r\nPlease backport to all relevant
versions.","sha":"91b59bfc2eb48a1c547db35c1a1e6bc82cf7b6de"}}]}]
BACKPORT-->

Co-authored-by: Pius <[email protected]>

docs/developer/best-practices/stability.asciidoc

@@ -29,7 +29,7 @@ access.
 *** We need to make sure security is set up in a specific way for
 non-standard {kib} indices. (create their own custom roles)
 * {kib} running behind a reverse proxy or load balancer, without sticky
-sessions. (we have had many discuss/SDH tickets around this)
+sessions.
 * If a proxy/loadbalancer is running between ES and {kib}
 
 [discrete]
@@ -78,4 +78,4 @@ Does the feature work efficiently on the list of supported browsers?
 * Does the feature affect old indices or saved objects?
 * Has the feature been tested with {kib} aliases?
 * Read/Write privileges of the indices before and after the
-upgrade?
+upgrade?