[SRVCOM-3368] Add Installing kn CLI links for OSL plugin

First xref fix for SRVCOM-3368

First xref experiment for SRVCOM-3368

Point links to assembly for SRVCOM-3368

Author: ochromy

modules/serverless-logic-install-kn-workflow-binary-file-linux.adoc

@@ -10,7 +10,7 @@ If you are using a Linux distribution that does not have RPM or another package
 
 .Prerequisites
 
-* You have installed the Knative (`kn`) command-line interface (CLI).
+* You have installed the xref:../install/installing-kn.adoc#installing-kn[Knative (`kn`) command-line interface (CLI)].
 
 * If you are not using {op-system-base} or Fedora, ensure that the *libc* library is installed in a directory on your path.
 +

modules/serverless-logic-install-kn-workflow-binary-file-macos.adoc

@@ -15,7 +15,7 @@ On macOS, some systems might block the application from running due to security
 
 .Prerequisites
 
-* You have installed the Knative (`kn`) command-line interface (CLI).
+* You have installed the xref:../install/installing-kn.adoc#installing-kn[Knative (`kn`) command-line interface (CLI)].
 
 .Procedure
 

modules/serverless-logic-install-kn-workflow-binary-file-windows.adoc

@@ -10,7 +10,7 @@ If you are using Windows, you can install the Knative Workflow plugin.
 
 .Prerequisites
 
-* You have installed the Knative (`kn`) command-line interface (CLI).
+* You have installed the xref:../install/installing-kn.adoc#installing-kn[Knative (`kn`) command-line interface (CLI)].
 
 .Procedure