Removed A0 comment

Removed A0 from the comment , changed with the explanation of the line

Author: marqdevx

examples/Oled_Display/Oled_Display.ino

@@ -6,7 +6,7 @@ void setup() {
 }
 
 void loop() {
-  int random_value = random(0, 1023);   //read value from A0
+  int random_value = random(0, 1023);   // create a random value
 
   Oled.setFont(u8x8_font_chroma48medium8_r); 
   Oled.setCursor(0, 33);