Fix the unintentional bracket in the docs badge url
<img src="https://github.com/teloxide/teloxide/workflows/Continuous%20integration/badge.svg">
</a>
<a href="https://teloxide.netlify.com">
- <img src="https://img.shields.io/badge/docs-dev-blue)">
+ <img src="https://img.shields.io/badge/docs-dev-blue">
</a>
<a href="https://crates.io/crates/teloxide">
<img src="https://img.shields.io/crates/v/teloxide.svg">
