Fix atom47 keyboard revision naming (#3013)

* Fixed Atom47 revisions, rev1 is rev3

* Remove rev1 folder

* Added bootloader to info.json

* Renamed layout

* Change readme for atom47

* Remove bootloader line from info.json

keyboards/atom47/rev2/info.json

@@ -1,8 +1,7 @@
 {
   "keyboard_name": "Atom47", 
-  "url": "", 
-  "maintainer": "qmk", 
-  "bootloader": "", 
+  "url": "https://atomkb.eu/atom47", 
+  "maintainer": "Maarten Dekkers", 
   "width": 13, 
   "height": 4, 
   "layouts": {

keyboards/atom47/rev2/rev2.h

@@ -6,7 +6,7 @@
 // readability
 #define XXX KC_NO
 
-#define LAYOUT_ansi( \
+#define LAYOUT( \
     k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0a, k0b, k0c, \
 	k10, k11, k12, k13, k14, k15, k16, k17, k18, k19, k1a,      k1c, \
 	k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a,      k2c, \