Update modules/customizing-the-tech-radar-page/proc-customize-rhdh-tech-radar-page.adoc

Author: themr0c

modules/customizing-the-tech-radar-page/proc-customize-rhdh-tech-radar-page.adoc

@@ -61,7 +61,7 @@ To use a separate service to provide the Tech Radar data, complete the following
 ----
 backend:    
    reading:    
-        allow:    
+        allow:     
           - host: 'hostname'
 ----
 . Add the following to the `app-config.yaml` file: