Update API report to new format

Signed-off-by: Niklas Granander <ngranander@spotify.com>

plugins/xcmetrics/api-report.md

@@ -3,6 +3,7 @@
 > Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
 
 ```ts
+/// <reference types="react" />
 
 import { BackstagePlugin } from '@backstage/core-plugin-api';
 import { RouteRef } from '@backstage/core-plugin-api';
@@ -11,11 +12,12 @@ import { RouteRef } from '@backstage/core-plugin-api';
 export const XcmetricsPage: () => JSX.Element;
 
 // @public (undocumented)
-export const xcmetricsPlugin: BackstagePlugin<{
+export const xcmetricsPlugin: BackstagePlugin<
+  {
     root: RouteRef<undefined>;
-}, {}>;
-
+  },
+  {}
+>;
 
 // (No @packageDocumentation comment for this package)
-
 ```