Update README.md (Codeception#110)

Author: glensc

Diff for: README.md

@@ -5,4 +5,4 @@ http://codeception.com
 If you want to improve the site, please submit your pull requests. Most of design changes are welcome!
 To run site locally (published with Github pages) you need to install [Jekyll](https://jekyllrb.com/)
 
-**Documentation is copied** from main [Codeception repo](https://github.com/codeception/codeception), changes to **Gudes** or **Module Reference** should be sent into it.  
+**Documentation is copied** from main [Codeception repo](https://github.com/codeception/codeception), changes to **Guides** or **Module Reference** should be sent into it.