Adds info note into amip runscript

runs/amip/exp.amip.run

@@ -79,6 +79,13 @@ checkpoint_interval="P1Y"
 
 file_interval="P1Y"
 
+############################################################
+#
+# NO FURTHER CHANGES TO THE DIRECTORIES AND SIMULATION NAME
+# SHOULD BE NEEDED BELOW THIS LINE
+#
+############################################################
+
 #-----------------------------------------------------------------------------
 # Provide input files
 # $Id: format.tmpl 9264 2021-06-21 21:24:57Z m221078 $