Add uhfHeaderId = MSDocsHeader-Powershell to docfx.json

Author: Docs Allowlist Management

docfx.json

@@ -80,6 +80,7 @@
     "overwrite": [],
     "externalReference": [],
     "globalMetadata": {
+      "uhfHeaderId": "MSDocsHeader-Powershell",
       "apiPlatform": "powershell",
       "products": ["https://authoring-docs-microsoft.poolparty.biz/devrel/f1499c3b-793f-48c3-a9ce-20285bcc6541"],
       "breadcrumb_path": "/powershell/sccm/bread/toc.json",