Fix LocalStackContainer class doc example (#115)

* Fix LocalStackContainer class doc example

* Update testcontainers/localstack.py

Co-authored-by: Gary Fernie <[email protected]>

Co-authored-by: Till Hoffmann <[email protected]>

Author: GFernie

testcontainers/localstack.py

@@ -21,10 +21,10 @@ class LocalStackContainer(DockerContainer):
     Example
     -------
     ::
-        localstack = LocalStackContainer(image="localstack/localstack:0.11.3")
+        localstack = LocalStackContainer(image="localstack/localstack:0.11.4")
         localstack.with_services("dynamodb", "lambda")
         localstack.start()
-        dynamo_endpoint = localstack.get_endpoint_override()
+        dynamo_endpoint = localstack.get_url()
         dynamo_client = boto3.client("dynamodb", endpoint_url=dynamo_endpoint)
         scan_result = dynamo_client.scan(TableName='foo')
         # Do something with the scan result