Hide link to Hammer reference for orcharhino (#4351)

Downstream orcharhino docs do not include the Hammer Reference guide.
Therefore, this patch hides the link for orcharhino builds.

Author: maximiliankolb

guides/common/modules/con_introduction-to-hammer.adoc

@@ -7,5 +7,7 @@ Hammer is a powerful command-line tool provided with {ProjectNameX}.
 You can use Hammer to configure and manage a {ProjectServer} either through CLI commands or automation in shell scripts.
 Hammer also provides an interactive shell.
 
+ifndef::orcharhino[]
 .Additional resources
 * {HammerRefDocURL}[{HammerRefDocTitle}]
+endif::[]