README.md: change 'peddle' to 'pedal'
README.md: change 'peddle' to 'pedal'

**Pedal** is the act of using bicycle pedals. *Peddle* means to travel around selling something. I think you meant the former.

BTW, thanks for the great guide!
greg-dev/clean-code-javascript-pl,DavidVujic/clean-code-javascript,andersontr15/clean-code-javascript-es,ryanmcdermott/clean-code-javascript