Fix typos (Azure#29751)

Author: mderriey

sdk/identity/Azure.Identity/CHANGELOG.md

@@ -28,7 +28,7 @@
 ### Features Added
 - `EnvironmentCredential` now supports certificate subject name / issuer based authentication with `AZURE_CLIENT_SEND_CERTIFICATE_CHAIN` environment variable (A community contribution, courtesy of _[trevorlacey-msft](https://github.com/trevorlacey-msft))_.
 - `ManagedIdentityCredential` now supports accepting a `ResourceIdentifier` argument to specify a User Assigned Managed Identity by resource Id rather than client Id. `DefaultAzureCredential` also supports this via the `ManagedIdentityResourceId` property of `DefaultAzureCredentialOptions`.
-- Added `ClientAssertionCredential` for authenticating service principals with a presigned client assetion.
+- Added `ClientAssertionCredential` for authenticating service principals with a presigned client assertion.
 
 ### Bugs Fixed
 - Fixed `AuthenticationFailedException` from `AzurePowerSheellCredential` when not logged in on non-windows platforms [#23498](https://github.com/Azure/azure-sdk-for-net/issues/23498)
@@ -63,7 +63,7 @@ Thank you to our developer community members who helped to make Azure Identity b
 
 ### Features Added
 
-- `DefaultAzureCredentialOptions` now has a `InteractiveBrowserClientId` property which allows passing a ClientId value to the InteractiveBrowserCredential` when constructing a `DefaultAzureCredential`.
+- `DefaultAzureCredentialOptions` now has a `InteractiveBrowserClientId` property which allows passing a ClientId value to the `InteractiveBrowserCredential` when constructing a `DefaultAzureCredential`.
 - Implement `OnBehalfOfCredential` which enables authentication to Azure Active Directory using an On-Behalf-Of flow.
 - Added support to `ManagedIdentityCredential` for Azure hosts using federated token exchange for managed identity.