rgbmatrix: also explain the order of rgb and addr pins

Author: jepler

shared-bindings/rgbmatrix/RGBMatrix.c

@@ -196,8 +196,8 @@ STATIC void preflight_pins_or_throw(uint8_t clock_pin, uint8_t *rgb_pins, uint8_
 //|         :param int tile: In a multi-row matrix, the number of rows of panels
 //|         :param int bit_depth: The color depth of the matrix. A value of 1 gives 8 colors, a value of 2 gives 64 colors, and so on. Increasing bit depth increases the CPU and RAM usage of the RGBMatrix, and may lower the panel refresh rate. The framebuffer is always in RGB565 format regardless of the bit depth setting
 //|         :param bool serpentine: In a multi-row matrix, True when alternate rows of panels are rotated 180°, which can reduce wiring length
-//|         :param Sequence[digitalio.DigitalInOut] rgb_pins: The matrix's RGB pins
-//|         :param Sequence[digitalio.DigitalInOut] addr_pins: The matrix's address pins
+//|         :param Sequence[digitalio.DigitalInOut] rgb_pins: The matrix's RGB pins in the order ``(R1,G1,B1,R2,G2,B2...)``
+//|         :param Sequence[digitalio.DigitalInOut] addr_pins: The matrix's address pins in the order ``(A,B,C,D...)``
 //|         :param digitalio.DigitalInOut clock_pin: The matrix's clock pin
 //|         :param digitalio.DigitalInOut latch_pin: The matrix's latch pin
 //|         :param digitalio.DigitalInOut output_enable_pin: The matrix's output enable pin