namespace sts -> namespace ams

namespace sts::ams -> ams::exosphere, ams::.

This is to facilitate future use of ams:: namespace code in
mesosphere, as we'll want to include ams::util, ams::result, ams::svc...

stratosphere/libstratosphere/source/cfg/cfg_sd_card.cpp

@@ -19,7 +19,7 @@
 #include <stratosphere/cfg.hpp>
 #include <stratosphere/sm.hpp>
 
-namespace sts::cfg {
+namespace ams::cfg {
 
     namespace {