Update url to docs in the README.

Author: iago-lito

README.md

@@ -52,9 +52,9 @@ At each step, we detail how the model can be customized at your will.
 Lastly, the [Tutorials] section
 contains realistic use-cases of EcologicalNetworksDynamics.
 
-[Quick start]: https://github.com/BecksLab/EcologicalNetworksDynamics.jl/XXX
-[Guide]: https://github.com/BecksLab/EcologicalNetworksDynamics.jl/XXX
-[Tutorials]: https://github.com/BecksLab/EcologicalNetworksDynamics.jl/XXX
+[Quick start]: https://beckslab.github.io/EcologicalNetworksDynamics.jl/man/quickstart/
+[Guide]: https://beckslab.github.io/EcologicalNetworksDynamics.jl/
+[Tutorials]: https://beckslab.github.io/EcologicalNetworksDynamics.jl/XXX
 
 ## Getting help