docs: Fix Typos in Doc Update README.md

[mdqst]

Description

Hi guys,

I've corrected the following:

• "acount Pubkey" → changed to "account Pubkey"
• "as workaroud" → changed to "as workaround"
• "fields works as logical AND" → changed to "fields work as logical AND"
• "filters doesn't have any limits" → changed to "filters don't have any limits"

These updates should make the documentation more precise and professional.

[fanatid]

Thank you!