Update image and oled code

Image with default firmware and oled on keyboard level

keyboards/rarepotato8de/3x3macropad/3x3macropad.c

@@ -96,12 +96,14 @@ static void render_bongo2(void) {
 /* This code switches the shown image on the oled on every 350th call of this function */
 bool showBongo1 = true;
 int calls = 0;
-bool oled_task_user(void) {
+bool oled_task_kb(void) {
+    if (!oled_task_user()) { 
+		return false; 
+	}
 	if(calls++ > 350) {
 		showBongo1 = !showBongo1;
 		calls = 0;
 	}
-	
 	if(showBongo1) {
 		render_bongo1();	
 	} else {

keyboards/rarepotato8de/3x3macropad/readme.md

@@ -1,6 +1,6 @@
 # 3x3macropad
 
-![3x3macropad](https://i.imgur.com/OTb3CUq.png)
+![3x3macropad](https://i.imgur.com/LMkcKOw.jpg)
 
 The 3x3macropad is a small macropad with a cool OLED screen and rotary encoder.
 It was inspired by stacked FR4 keyboards like the Discipline65.