[doc] fixes #408 - Minor typos
[doc] fixes #408 - Minor typos

olemis/brython,jonathanverner/brython,Hasimir/brython,brython-dev/brython,Hasimir/brython,jonathanverner/brython,jonathanverner/brython,olemis/brython,jonathanverner/brython,olemis/brython,kikocorreoso/brython,kikocorreoso/brython,brython-dev/brython,olemis/brython,Hasimir/brython,kikocorreoso/brython,Hasimir/brython,brython-dev/brython