Update README to include SDK version 1.0.0-beta.2 and supported API versions (Azure#47739)

Author: quentinRobinson

sdk/cognitivelanguage/Azure.AI.Language.Text/README.md

@@ -29,6 +29,7 @@ dotnet add package Azure.AI.Language.Text --prerelease
 |SDK version  |Supported API version of service
 |-------------|-----------------------------------------------------
 |1.0.0-beta.1 | 2022-05-01, 2023-04-01, 2023-11-15-preview (default)
+|1.0.0-beta.2 | 2022-05-01, 2023-04-01, 2024-11-01, 2024-11-15-preview (default)
 
 ### Prerequisites