Rename config.json to aos_config.json

Plenty of other things are called config.json, so let's pick a more
unique name.

Change-Id: I6510a172ec62674dd1b11bd71cef9aac2480c612
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/y2022/wpilib_interface.cc b/y2022/wpilib_interface.cc
index bd884a8..2fc5f6b 100644
--- a/y2022/wpilib_interface.cc
+++ b/y2022/wpilib_interface.cc
@@ -448,7 +448,7 @@
         std::make_shared<const Values>(constants::MakeValues());
 
     aos::FlatbufferDetachedBuffer<aos::Configuration> config =
-        aos::configuration::ReadConfig("config.json");
+        aos::configuration::ReadConfig("aos_config.json");
 
     // Thread 1.
     ::aos::ShmEventLoop joystick_sender_event_loop(&config.message());