pw_transfer: Run buildifier

Change-Id: I2f09e8a56f04ec675b05cdc83fd19ac3ba5660a6
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/55507
Pigweed-Auto-Submit: Rob Mohr <mohrr@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
Reviewed-by: Alexei Frolov <frolv@google.com>
diff --git a/pw_transfer/BUILD.bazel b/pw_transfer/BUILD.bazel
index c3d57c4..25425de 100644
--- a/pw_transfer/BUILD.bazel
+++ b/pw_transfer/BUILD.bazel
@@ -24,14 +24,14 @@
 
 pw_cc_library(
     name = "pw_transfer",
-    hdrs = [
-        "public/pw_transfer/handler.h",
-        "public/pw_transfer/transfer.h",
-    ],
     srcs = [
         "chunk.cc",
         "pw_transfer_private/chunk.h",
-        "transfer.cc"
+        "transfer.cc",
+    ],
+    hdrs = [
+        "public/pw_transfer/handler.h",
+        "public/pw_transfer/transfer.h",
     ],
     includes = ["public"],
     deps = [