update template readme

quantum/template/readme.md

@@ -5,11 +5,11 @@
 A short description of the keyboard/project
 
 Keyboard Maintainer: [You](https://github.com/yourusername)  
-Hardware Supported: The PCBs, controllers supported
+Hardware Supported: The PCBs, controllers supported  
 Hardware Availability: links to where you can find this hardware
 
 Make example for this keyboard (after setting up your build environment):
 
-    make planck/rev4:default
+    make %KEYBOARD%:default
 
 See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.