Update README.md

wording

Author: HughMaingauche

README.md

@@ -5,12 +5,12 @@ Hello All,
 
 This is an upgrade of my [previous](https://github.com/HughMaingauche/PICO-VGA-Micropython) VGA micropython display library, using the pico2 allows to use a VGA screen with a 800x600 resolution and 3 bits per pixel (8 colors).
 This library uses 3 PIO statemachines and 2 DMA channels
-A full framebuffer and a font, once loaded in memory, will leave approx 280k of available memory to do stuff and use a VGA monitor directly connected to the PICO
+A full framebuffer and a font, once loaded in memory, will leave approx 270k of available memory to do stuff and use a VGA monitor directly connected to the PICO
 
 Other improvements are:
 - Use of the DMA included library instead of direct registry modification
 - Chaged the font system to use xglcd fonts (from [rdagger library](https://github.com/rdagger/micropython-ili9341/tree/master))
-- Added a plotting library to do real time plotting more easily
+- Added a plotting library to make real time plotting more easy
 
 I tried to document the code as much as I could. I have no doubt that this can be optimized quite a lot.
 If any of you is interested in using or improving it, i'll be happy to provide further explanations.