Fix Usage for stack-create()

Author: mbailey

lib/stack-functions

@@ -100,7 +100,7 @@ stack-create() {
   # create a new stack
   local inputs=$(__bma_read_inputs $@)
   local stack=$(_stack_name_arg $inputs)
-  [[ -z ${stack} ]] && __bma_usage "stack" && return 1
+  [[ -z ${stack} ]] && __bma_usage "stack [template-file] [parameters-file]" && return 1
 
   local template=$(_stack_template_arg $inputs)
   if [ ! -f "$template" ]; then
@@ -121,7 +121,7 @@ stack-update() {
   # update an existing stack
   local inputs=$(__bma_read_inputs $@)
   local stack=$(_stack_name_arg $inputs)
-  [[ -z ${stack} ]] && __bma_usage "stack [template-file] [params-file]" && return 1
+  [[ -z ${stack} ]] && __bma_usage "stack [template-file] [parameters-file]" && return 1
 
   local template=$(_stack_template_arg $inputs)
   if [ ! -f "$template" ]; then