kamctl: man page - note about prefixing number params with 's:' to enforce string

utils/kamctl/kamctl.8

@@ -40,6 +40,10 @@ inside
 .B kamctlrc
 file.
 
+.PP
+For some commands, parameters can be prefixed with 's:' in order to enforce
+string type (e.g., 's:123456789').
+
 .SH AUTHORS
 
 see