Polish changelog for upcoming release (#14686)

Author: dingmeng-xue

src/Resources/Resources/ChangeLog.md

@@ -19,12 +19,12 @@
 -->
 
 ## Upcoming Release
-* Added upcoming breaking change warnings on below cmdlets, because the value of IdentifierUri parameter will need verified domain.
+* Added upcoming breaking change warnings on below cmdlets, because the value of `IdentifierUris` parameter will need verified domain.
   - `New-AzADApplication` 
   - `Update-AzADApplication`
   - `New-AzADServicePrincipal`
   - `Update-AzADServicePrincipal`
-* Ignored bicep warning message in error stream if exitcode equals zero.
+* Ignored Bicep warning message in error stream if exitcode equals zero.
 
 ## Version 3.4.0
 * Redirected bicep message to verbose stream

src/StreamAnalytics/StreamAnalytics/ChangeLog.md

@@ -18,7 +18,7 @@
         - Additional information about change #1
 -->
 ## Upcoming Release
-* The parameters of all cmdlet will be updated in an upcoming breaking change release.
+* Added upcoming breaking change warning message to all cmdlets because of upcoming changes on parameters.
 
 ## Version 1.0.1
 * Update references in .psd1 to use relative path