Note on inproc template

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Author: alexellis

template/golang-middleware-inproc/template.yml

@@ -1,6 +1,12 @@
 language: golang-middleware-inproc
 fprocess: ./handler
 welcome_message: |
+  This function consumes the watchdog via its Go SDK rather than
+  running two separate processes. It is for testing and will
+  likely be merged into the normal "golang-middleware" template
+  in the future and be deleted itself. Pin to a specific
+  SHA if you do want use this template.
+
   You have created a new function which uses Go 1.25 and Alpine
   Linux as its base image. The go.mod version is set to 1.24.0
   for compatibility.