docs: fix simple typo, tempaltes -> templates (#5188)
docs: fix simple typo, tempaltes -> templates (#5188)

There is a small typo in appengine/standard/i18n/README.md.

Should read `templates` rather than `tempaltes`.


Semi-automated pull request generated by
https://github.com/timgates42/meticulous/blob/master/docs/NOTE.md
GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples