Fix incorrect link to conformance report in diagnostics documentation

Author: maartenba

astro/src/content/docs/identityserver/diagnostics/index.md

@@ -40,4 +40,4 @@ way to emit diagnostic information from a process. The events may eventually be
 IdentityServer can generate a conformance report that assesses your configuration against OAuth 2.1
 and FAPI 2.0 specifications.
 
-[Read More](/identityserver/diagnostics/conformance-report/)
+[Read More](/identityserver/diagnostics/conformance-report.md)