clang-format: update to latest from docs repo

Since `Cpp11` is an alias for `Latest` and we should tend towards using the
latest C++ standard, udpate the C++ standard to Latest.

https://github.com/llvm/llvm-project/commit/e5032567903de19962333c4bf7d2edceaf4f9824#diff-b49a097415dff2837d9626d422c58ba8R82
https://github.com/openbmc/docs/blob/master/style/cpp/.clang-format

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: Iaac09e3c11ead581114c4b7e45ff863ec56a63f6
diff --git a/group.hpp b/group.hpp
index fead647..fdfcf55 100644
--- a/group.hpp
+++ b/group.hpp
@@ -4,9 +4,10 @@
 
 #include <sdbusplus/bus.hpp>
 #include <sdbusplus/server/object.hpp>
-#include <string>
 #include <xyz/openbmc_project/Led/Group/server.hpp>
 
+#include <string>
+
 namespace phosphor
 {
 namespace led
@@ -15,8 +16,9 @@
 /** @class Group
  *  @brief Manages group of LEDs and applies action on the elements of group
  */
-class Group : sdbusplus::server::object::object<
-                  sdbusplus::xyz::openbmc_project::Led::server::Group>
+class Group :
+    sdbusplus::server::object::object<
+        sdbusplus::xyz::openbmc_project::Led::server::Group>
 {
   public:
     Group() = delete;