pw_thread: Run buildifier

Change-Id: I3e282feecb4252c511da0ed275ef78968243a456
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/57300
Pigweed-Auto-Submit: Rob Mohr <mohrr@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
Reviewed-by: Armando Montanez <amontanez@google.com>
diff --git a/pw_thread/BUILD.bazel b/pw_thread/BUILD.bazel
index b3674f8..6b2daa6 100644
--- a/pw_thread/BUILD.bazel
+++ b/pw_thread/BUILD.bazel
@@ -99,11 +99,11 @@
 
 pw_cc_library(
     name = "thread",
-    hdrs = [ "public/pw_thread/config.h" ],
-    includes = ["public"],
     srcs = [
         "thread.cc",
     ],
+    hdrs = ["public/pw_thread/config.h"],
+    includes = ["public"],
     deps = [
         ":id",
         ":thread_core",