Correct error in multi connector CLI (#15)

Author: Charly Molter

examples/connector.yaml

@@ -1,4 +1,5 @@
-name: conn1
-type: cloudevent
-with:
-  filter: event.type == "foo"
+connectors:
+  - name: conn1
+    type: cloudevent
+    with:
+      filter: event.type == "foo"

pkg/koyeb/connector.go

@@ -150,7 +150,7 @@ func createConnectors(cmd *cobra.Command, args []string) error {
 
 	if file != "" {
 		log.Debugf("Loading file %s", file)
-		err := loadMultiple(file, &all, "stacks")
+		err := loadMultiple(file, &all, "connectors")
 		if err != nil {
 			er(err)
 		}