update CHANGELOG

CHANGELOG.md

@@ -7,6 +7,8 @@ IMPROVEMENTS:
 BUG FIXES:
 
  * core: Fixing use of remote state with plan files. [GH-741]
+ * core: Fix a panic case when certain invalid types were used in
+     the configuration. [GH-691]
 
 PLUGIN CHANGES:
 

helper/schema/schema.go

@@ -915,7 +915,7 @@ func (m schemaMap) validateList(
 	rawV := reflect.ValueOf(raw)
 	if rawV.Kind() != reflect.Slice {
 		return nil, []error{fmt.Errorf(
-			"%s: should be an array", k)}
+			"%s: should be a list", k)}
 	}
 
 	// Now build the []interface{}