Update ci.mgmt.yml (#33234)

### Packages impacted by this PR


### Issues associated with this PR


### Describe the problem that is addressed by this PR


### What are the possible designs available to address the problem? If
there are more than one possible design, why was the one in this PR
chosen?


### Are there test cases added in this PR? _(If not, why?)_


### Provide a list of related PRs _(if any)_


### Command used to generate this PR:**_(Applicable only to SDK release
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### Checklists
- [ ] Added impacted package name to the issue description
- [ ] Does this PR needs any fixes in the SDK Generator?** _(If so,
create an Issue in the
[Autorest/typescript](https://github.com/Azure/autorest.typescript)
repository and link it here)_
- [ ] Added a changelog (if necessary)

Author: kazrael2119

sdk/impactreporting/ci.mgmt.yml

@@ -29,7 +29,7 @@ pr:
 extends:
   template: /eng/pipelines/templates/stages/archetype-sdk-client.yml
   parameters:
-    ServiceDirectory: sdk/impactreporting
+    ServiceDirectory: impactreporting
     Artifacts:
       - name: azure-arm-impactreporting
         safeName: azurearmimpactreporting