clang-format: [Java] Fix static generic methods.

Before:
  public static<R> ArrayList<R> get() {}

After:
  public static <R> ArrayList<R> get() {}

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@221122 91177308-0d34-0410-b5e6-96231b3b80d8