rectified link error

Author: pabel-rh

modules/getting-started/proc-customize-rhdh-tech-radar-page.adoc

@@ -21,7 +21,7 @@ You can provide data to the Tech Radar page from the following sources:
 
 .Prerequisites
 
-* You have installed {product} by using either the Operator or Helm chart. For more information, see xref:{installing-on-ocp-book-url}[{installing-on-ocp-book-title}].
+* You have installed {product} by using either the Operator or Helm chart. For more information, see link:{installing-on-ocp-book-url}[{installing-on-ocp-book-title}].
 * Configure integrations under the `integrations` section in the `app-config.yaml` file to specify the sources from which the Tech Radar plugin fetches data for display.
 
 .Procedure