api: controller: Lint fixes.

Fix line-too-long and docstring-section-indent errors.

BUG=b:233893248
TEST=cros lint

Change-Id: I52ac19eb3a38066d4d09d56d27d61c904269a0e7
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/4190794
Tested-by: Alex Klein <saklein@chromium.org>
Commit-Queue: Alex Klein <saklein@chromium.org>
Auto-Submit: Alex Klein <saklein@chromium.org>
Reviewed-by: Cindy Lin <xcl@google.com>
diff --git a/api/controller/sdk.py b/api/controller/sdk.py
index 73b29e1..96ed70e 100644
--- a/api/controller/sdk.py
+++ b/api/controller/sdk.py
@@ -175,7 +175,7 @@
 @faux.all_empty
 @validate.validation_complete
 def CreateSnapshot(input_proto, output_proto, _config):
-    """Create a chroot snapshot and return a corresponding opaque snapshot key."""
+    """Create a chroot snapshot and return a corresponding opaque key."""
     chroot = controller_util.ParseChroot(input_proto.chroot)
     token = sdk.CreateSnapshot(chroot, replace_if_needed=True)
     output_proto.snapshot_token.value = token