Format bzl file with buildifier

Change-Id: I9d75f8b3ca9cbc93ff18ba871bc2f75097f35604
diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index f166334..ed99b35 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -1,9 +1,10 @@
 """External plugin dependencies for the Automerger plugin."""
-load('//tools/bzl:maven_jar.bzl', 'maven_jar')
+
+load("//tools/bzl:maven_jar.bzl", "maven_jar")
 
 def external_plugin_deps():
-  maven_jar(
-    name = 're2j',
-    artifact = 'com.google.re2j:re2j:1.0',
-    sha1 = 'd24ac5f945b832d93a55343cd1645b1ba3eca7c3',
-  )
+    maven_jar(
+        name = "re2j",
+        artifact = "com.google.re2j:re2j:1.0",
+        sha1 = "d24ac5f945b832d93a55343cd1645b1ba3eca7c3",
+    )