Update README formatting and issues

[stuarthayhurst]

Ordered this laptop the other day, updated the README with some issues I ran into

• Updated formatting
• Added information on mouse stuttering
• Added information of s2idle SSD firmware bug
• Added information on GRUB scaling
• Added information on auto rotate

Let me know if you have any comments :)

[stuarthayhurst]

Handles #11

[Okazakee]

Approve this pls