fix owlbot.py format

Author: chingor13

java-common-protos/owlbot.py

@@ -34,7 +34,9 @@
   s.move(library)
 
 s.remove_staging_dirs()
-java.common_templates(monorepo=True, excludes=[
+java.common_templates(
+  monorepo=True,
+  excludes=[
     ".github/*",
     ".kokoro/*",
     "samples/*",