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/dependency.py b/api/controller/dependency.py
index 39a4c99..51a731b 100644
--- a/api/controller/dependency.py
+++ b/api/controller/dependency.py
@@ -24,10 +24,10 @@
     """Augment package deps from |json_map| to graph object.
 
     Args:
-      json_map: the json object that stores the portage package. This is
-        generated from chromite.lib.service.dependency.GetBuildDependency()
-      graph: the proto object that represents the dependency graph (see DepGraph
-        message in chromite/api/depgraph.proto)
+        json_map: the json object that stores the portage package. This is
+            generated from chromite.lib.service.dependency.GetBuildDependency()
+        graph: the proto object that represents the dependency graph (see DepGraph
+            message in chromite/api/depgraph.proto)
     """
     graph.sysroot.build_target.name = json_map["target_board"]
     graph.sysroot.path = json_map["sysroot_path"]
@@ -68,9 +68,9 @@
     """Create the build dependency graph.
 
     Args:
-      input_proto: The input arguments message.
-      output_proto: The empty output message.
-      _config: The API call config.
+        input_proto: The input arguments message.
+        output_proto: The empty output message.
+        _config: The API call config.
     """
     if input_proto.HasField("sysroot"):
         board = input_proto.sysroot.build_target.name
@@ -113,9 +113,9 @@
     """Get a list of package dependencies.
 
     Args:
-      input_proto: The input arguments message.
-      output_proto: The empty output message.
-      _config: The API call config.
+        input_proto: The input arguments message.
+        output_proto: The empty output message.
+        _config: The API call config.
     """
     sysroot_path = input_proto.sysroot.path
     src_paths = [src_path.path for src_path in input_proto.src_paths]