Referencing the hex file (#309)

Seems that this is a typo. When I used the hex file it worked so presuming that means it's right ;)

quantum/tools/README.md

@@ -1,6 +1,6 @@
 `eeprom_reset.hex` is to reset the eeprom on the Atmega32u4, like this:
 
     dfu-programmer atmega32u4 erase
-    dfu-programmer atmega32u4 flash --eeprom eeprom-reset.bin
+    dfu-programmer atmega32u4 flash --eeprom eeprom_reset.hex
 
- You'll need to reflash afterwards, because DFU requires the flash to be erased before messing with the eeprom.
+ You'll need to reflash afterwards, because DFU requires the flash to be erased before messing with the eeprom.