Fix broken links in report summary

Resolves #566

src/utils/slugger.ts

@@ -1,7 +1,9 @@
 // Returns HTML element id and href link usable as manual anchor links
 // This is needed because Github in check run summary doesn't automatically
 // create links out of headings as it normally does for other markdown content
-export function slug(name: string): {id: string; link: string} {
+import {ReportOptions} from '../report/get-report'
+
+export function slug(name: string, options: ReportOptions): {id: string; link: string} {
   const slugId = name
     .trim()
     .replace(/_/g, '')
@@ -9,6 +11,7 @@ export function slug(name: string): {id: string; link: string} {
     .replace(/[^\w-]/g, '')
 
   const id = `user-content-${slugId}`
-  const link = `#${slugId}`
+  // When using the Action Summary for display, links must include the "user-content-" prefix.
+  const link = options.useActionsSummary ? `#${id}` : `#${slugId}`
   return {id, link}
 }