[8.x] [Obs AI Assistant] fix spelling error (#199867) (#200225)

# Backport

This will backport the following commits from `main` to `8.x`:
- [[Obs AI Assistant] fix spelling error
(#199867)](#199867)

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

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

<!--BACKPORT [{"author":{"name":"Sandra
G","email":"[email protected]"},"sourceCommit":{"committedDate":"2024-11-14T17:21:30Z","message":"[Obs
AI Assistant] fix spelling error (#199867)\n\n## Summary\r\n\r\nFixes
spelling error from \"degradated\" to
\"degraded\".","sha":"8dafb11009995f637c71b5689cf6a803d2c9a6fd","branchLabelMapping":{"^v9.0.0$":"main","^v8.17.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","v9.0.0","backport:prev-minor","Team:Obs
AI Assistant"],"title":"[Obs AI Assistant] fix spelling
error","number":199867,"url":"https://github.com/elastic/kibana/pull/199867","mergeCommit":{"message":"[Obs
AI Assistant] fix spelling error (#199867)\n\n## Summary\r\n\r\nFixes
spelling error from \"degradated\" to
\"degraded\".","sha":"8dafb11009995f637c71b5689cf6a803d2c9a6fd"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"main","label":"v9.0.0","branchLabelMappingKey":"^v9.0.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/199867","number":199867,"mergeCommit":{"message":"[Obs
AI Assistant] fix spelling error (#199867)\n\n## Summary\r\n\r\nFixes
spelling error from \"degradated\" to
\"degraded\".","sha":"8dafb11009995f637c71b5689cf6a803d2c9a6fd"}}]}]
BACKPORT-->

Co-authored-by: Sandra G <[email protected]>

x-pack/packages/kbn-ai-assistant/src/chat/simulated_function_calling_callout.tsx

@@ -19,7 +19,7 @@ export function SimulatedFunctionCallingCallout() {
           <EuiText size="s">
             {i18n.translate('xpack.aiAssistant.simulatedFunctionCallingCalloutLabel', {
               defaultMessage:
-                'Simulated function calling is enabled. You might see degradated performance.',
+                'Simulated function calling is enabled. You might see degraded performance.',
             })}
           </EuiText>
         </EuiFlexItem>