RHIDP-5422: add peer review comments / remove TechDocs content from Customizing guide

Author: linfraze

modules/techdocs/proc-techdocs-addon-create.adoc

@@ -142,7 +142,7 @@ where
 
 _<new_techdocs_addon_props>_ (Optional) :: Specifies the `props` for your new TechDocs add-on, as specified in your `_<new_techdocs_add-on>_.tsx` file, if applicable.
 . In the `plugins.ts` file, import your new TechDocs add-on component.
-. Install and configure your new TechDocs add-on by following the steps in link:https://docs.redhat.com/en/documentation/red_hat_developer_hub/1.5/html/techdocs_for_red_hat_developer_hub/assembly-techdocs-addons-installing.adoc[Installing and configuring a TechDocs add-on].
+. Install and configure your new TechDocs add-on by following the steps in link:{techdocs-book-url}#techdocs-addon-installing[Installing and configuring a TechDocs add-on]
 
 .Verification
 . Restart the RHDH application and verify that the plugin is successfully activated and configured.

titles/customizing/master.adoc

@@ -25,13 +25,8 @@ include::modules/customizing-the-learning-paths/proc-customize-rhdh-learning-pat
 
 include::assemblies/assembly-configuring-the-global-header.adoc[leveloffset=+1]
 
-
 include::assemblies/assembly-configuring-a-floating-action-button.adoc[leveloffset=+1]
 
-
-include::assemblies/assembly-configuring-techdocs.adoc[leveloffset=+1]
-
-
 include::modules/customizing-the-tech-radar-page/proc-customize-rhdh-tech-radar-page.adoc[leveloffset=+1]