Update README.md markdown

[ruthiel]

There are some missing words in the code snippet due to markdown language.

Related open issue #10

[cla-assistant[bot]]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

:white_check_mark: ruthiel
:x: Ruthiel Trevisan

---

Ruthiel Trevisan seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[ruthiel]

This Pull Request contains corrections related to issues #9, #10. Other small formatting issues were corrected too (Links are working fine in Ex3 e.g.). Thank you!