Docs: run the api-extractor on master to update docs (#23726)

* regenerated packages docs.

* fixed spelling issues.

* fixed spelling issues.

docs/sources/packages_api/data/datemath.md

@@ -10,13 +10,11 @@ draft = true
 
 ## dateMath namespace
 
+> This API is provided as a preview for developers and may change based on feedback that we receive. Do not use this API in a production environment.
+> 
+
 ### dateMath namespace
 
-<b>Signature</b>
-
-```typescript
-export declare namespace dateMath 
-```
 <b>Import</b>
 
 ```typescript