Rename pins_arduino.h.txt to pins_arduino.h (#8608)

Author: PBrunot

Diff for: variants/lilygo_t_display/pins_arduino.h.txt renamed to variants/lilygo_t_display/pins_arduino.h

@@ -64,4 +64,4 @@ static const uint8_t VBAT = 34;
 static const uint8_t RIGHT_BUTTON = 35;
 static const uint8_t LEFT_BUTTON = 0;
 
-#endif /* Pins_Arduino_h */
+#endif /* Pins_Arduino_h */