Merge pull request #729 from tjp/patch-1

Add reference to 7.3 inkyframe

micropython/modules/picographics/README.md

@@ -67,6 +67,7 @@ Bear in mind that MicroPython has only 192K of RAM available- a 320x240 pixel di
 * Pico Inky Pack / Badger 2040 / Badger 2040 W - 296x128 mono E ink - `DISPLAY_INKY_PACK`
 * Inky Frame 5.7" - 600x448 7-colour E ink - `DISPLAY_INKY_FRAME`
 * Inky Frame 4.0" - 640x400 7-colour E ink - `DISPLAY_INKY_FRAME_4`
+* Inky Frame 7.3" - 800x480 7-colour E ink - `DISPLAY_INKY_FRAME_7`
 * Pico GFX Pack - 128x64 mono LCD Matrix - `DISPLAY_GFX_PACK`
 * Galactic Unicorn - 53x11 LED Matrix - `DISPLAY_GALACTIC_UNICORN`
 * Interstate75 and 75W - HUB75 Matrix driver - `DISPLAY_INTERSTATE75_SIZEOFMATRIX` please read below!