TemplateConfig doc links to the CLI options doc.

docs/ref-template-cfg.md

@@ -5,7 +5,7 @@ This is the authoritative reference for the ``TemplateConfig``
 which is provided as a development tool for rapid prototyping and
 testing of the templates used by the controller to generate VCL. The
 ``TemplateConfig`` resource is only read by the controller when it is
-invoked with the ``-devmode`` command-line flag.
+invoked with the ``-devmode`` [command-line flag](ref-cli-options.md).
 
 The fields of the ``TemplateConfig`` ``spec`` object stand for the
 templates defined by the controller code in