Fix: generator.yaml indent (#184)

Issue #, if available:

Generator.yaml file has a minor indent issue. Regeneration does not result in any code changes.

Description of changes:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Author: ananth102

apis/v1alpha1/ack-generate-metadata.yaml

@@ -1,13 +1,13 @@
 ack_generate_info:
-  build_date: "2022-12-07T21:20:55Z"
+  build_date: "2022-12-09T06:38:40Z"
   build_hash: 6e2ffbc3b16a30ac59be6719918c601c2c864064
   go_version: go1.17.13
   version: v0.20.1-3-g6e2ffbc
 api_directory_checksum: 48886052888c7166740636bc128afdb53d05a4cb
 api_version: v1alpha1
 aws_sdk_go_version: v1.44.117
 generator_config_info:
-  file_checksum: 60bfaf57553c2e031a3e78bc8bb9c3535ad8ada8
+  file_checksum: 1c2565c8be351e2db5832b707691a43bf3d38555
   original_file_name: generator.yaml
 last_modification:
   reason: API generation

generator.yaml

@@ -942,7 +942,7 @@ resources:
         404:
           code: ResourceNotFound
           message_suffix: does not exist
-        terminal_codes:
+      terminal_codes:
         - InvalidParameterCombination
         - InvalidParameterValue
         - MissingParameter