Update "StallGuard threshold" heading (#14395)

Marlin/src/module/configuration_store.cpp

        * TMC Sensorless homing thresholds
        */
       #if USE_SENSORLESS
-        CONFIG_ECHO_HEADING("TMC2130 StallGuard threshold:");
+        CONFIG_ECHO_HEADING("StallGuard threshold:");
         CONFIG_ECHO_START();
         #if X_SENSORLESS || Y_SENSORLESS || Z_SENSORLESS
           say_M914();