update some docs

docs/getting_started_introduction.md

@@ -36,7 +36,7 @@ If the keymap `config.h` exists, that file is included by the build system and t
 #ifndef CONFIG_USER_H
 #define CONFIG_USER_H
 
-#include "../../config.h"
+#include "config_common.h"
 ```
 
 If you want to override a setting from the parent `config.h` file, you need to `#undef` and then `#define` the setting again, like this:

docs/getting_started_vagrant.md

@@ -14,7 +14,7 @@ Other than having Vagrant and Virtualbox installed and possibly a restart of you
 
 The "easy" way to flash the firmware is using a tool from your host OS:
 
-* [QMK Flasher](https://github.com/qmk/qmk_flasher)
+* [QMK Toolbox](https://github.com/qmk/qmk_toolbox) (reccommened)
 * [Teensy Loader](https://www.pjrc.com/teensy/loader.html)
 * [Atmel FLIP](http://www.atmel.com/tools/flip.aspx)