api: Fix bad docblock indentation.

Also fix resulting line-too-long lint errors, but not other
existing instances of line-too-long errors.

BUG=b:233893248
TEST=cros lint

Change-Id: I75ebbcab5236551dea618f34783ec2fea7af60f1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3943256
Tested-by: Alex Klein <saklein@chromium.org>
Reviewed-by: Sloan Johnson <sloanjohnson@google.com>
Auto-Submit: Alex Klein <saklein@chromium.org>
Commit-Queue: Sloan Johnson <sloanjohnson@google.com>
diff --git a/api/router_unittest.py b/api/router_unittest.py
index 2c00e12..56324ec 100644
--- a/api/router_unittest.py
+++ b/api/router_unittest.py
@@ -197,11 +197,11 @@
         """Helper to create the implementation mock to test chroot assertions.
 
         Args:
-          expect_called: Whether the implementation should be called.
-           When False, an assertion will fail if it is called.
+            expect_called: Whether the implementation should be called.
+                When False, an assertion will fail if it is called.
 
         Returns:
-          The implementation.
+            The implementation.
         """
 
         def impl(_input_msg, _output_msg, _config):