Bazel: Reformat BUILD file with buildifier

Change-Id: I5d56eeceb1ba3c2738d59f6837edea7f9235a4e4

BUILD

diff --git a/BUILD b/BUILD
index d52faf1..3473bbe 100644
--- a/BUILD
+++ b/BUILD
@@ -1,10 +1,10 @@
-load('//tools/bzl:plugin.bzl', 'gerrit_plugin')
+load("//tools/bzl:plugin.bzl", "gerrit_plugin")
 
 gerrit_plugin(
-  name = 'commit-message-length-validator',
-  srcs = glob(['src/main/java/**/*.java']),
-  resources = glob(['src/main/resources/**/*']),
-  manifest_entries = [
-    'Gerrit-PluginName: commit-message-length-validator',
-  ],
+    name = "commit-message-length-validator",
+    srcs = glob(["src/main/java/**/*.java"]),
+    manifest_entries = [
+        "Gerrit-PluginName: commit-message-length-validator",
+    ],
+    resources = glob(["src/main/resources/**/*"]),
 )