Update index.md

added link to blog

releases/2024-10/index.md

@@ -11,9 +11,7 @@ You can find links to packages, code, and docs on our [Azure SDK Releases page](
 
 ## Release Highlights
 
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+Welcome to the September release of the Azure SDK. Read more on our [October Release Blog](https://devblogs.microsoft.com/azure-sdk/azure-sdk-release-october-2024/).
 
 ## Release Notes