Make buildifier happy

Add docstring to java_tools_repo

java/repositories.bzl

diff --git a/java/repositories.bzl b/java/repositories.bzl
index 844bf56..4875f7a 100644
--- a/java/repositories.bzl
+++ b/java/repositories.bzl
@@ -20,6 +20,7 @@
 load("//toolchains:remote_java_repository.bzl", "remote_java_repository")
 
 def java_tools_repos():
+    """ Declares the remote java_tools repositories """
     maybe(
         http_archive,
         name = "remote_java_tools",