more docs typos

Author: Daniel King

docs/source/trainer/checkpointing.rst

@@ -304,7 +304,7 @@ Behind the scenes, the :class:`.RemoteUploaderDownloader` uses :doc:`Apache Libc
     from composer.utils import LibcloudObjectStore
 
     remote_uploader_downloader = RemoteUploaderDownloader(
-        remote_bucket_uri="libcloud://my_bucket"
+        remote_bucket_uri="libcloud://my_bucket",
         remote_backend_kwargs={
             "provider": "s3",  # The Apache Libcloud provider name
             "container": "my_bucket",  # The name of the cloud container (i.e. bucket) to use.

docs/source/trainer/file_uploading.rst

@@ -207,7 +207,7 @@ Similar to the S3 Example above, we can upload files to a remote SFTP filesystem
 
     # Configure the logger
     logger = RemoteUploaderDownloader(
-        remote_backend_uri="sftp://sftp_server.example.com",
+        remote_bucket_uri="sftp://sftp_server.example.com",
     )
 
     # Define the trainer