api: Fix docstring-section-indent errors

Fix docstring-section-indent errors and resulting line-too-long
errors, but not other existing line-too-long errors.

BUG=b:233893248
TEST=cros lint

Change-Id: I552ce489aaabce6e6600e2518385569ce59b134e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3947314
Reviewed-by: Gilberto Contreras <gcontreras@google.com>
Tested-by: Alex Klein <saklein@chromium.org>
Auto-Submit: Alex Klein <saklein@chromium.org>
Commit-Queue: Gilberto Contreras <gcontreras@google.com>
diff --git a/api/controller/payload.py b/api/controller/payload.py
index 4ca6870..545168c 100644
--- a/api/controller/payload.py
+++ b/api/controller/payload.py
@@ -51,12 +51,12 @@
     """Generate a update payload ('do paygen').
 
     Args:
-      input_proto: Input proto.
-      output_proto: Output proto.
-      config: The API call config.
+        input_proto: Input proto.
+        output_proto: Output proto.
+        config: The API call config.
 
     Returns:
-      A controller return code (e.g. controller.RETURN_CODE_SUCCESS).
+        A controller return code (e.g. controller.RETURN_CODE_SUCCESS).
     """
 
     # Resolve the tgt image oneof.
@@ -138,9 +138,9 @@
     """Set the output proto with the results from the service class.
 
     Args:
-      output_proto: The output proto.
-      local_path: set output_proto with the local path, or ''.
-      remote_uri: set output_proto with the remote uri, or ''.
+        output_proto: The output proto.
+        local_path: set output_proto with the local path, or ''.
+        remote_uri: set output_proto with the remote uri, or ''.
     """
     output_proto.success = True
     output_proto.local_path = local_path or ""