Update changelog.md file

Zhenyu Zhou · Zhenyu Zhou · commit 669d80f8d2ab · 2022-02-24T16:00:55.000+08:00
diff --git a/src/HDInsight/HDInsight/ChangeLog.md b/src/HDInsight/HDInsight/ChangeLog.md
@@ -18,6 +18,7 @@
         - Additional information about change #1
 -->
 ## Upcoming Release
+This release migrates Microsoft.Azure.Graph SDK to MicrsoftGraph SDK, there is not customer impact.
 
 ## Version 5.0.0
 * Added two parameters `-Zone` and `-PrivateLinkConfiguration` to cmdlet `New-AzHDInsightCluster`
