Missing dependency in the documentation

[lrapetti]

In the repo documentation (https://github.com/robotology/walking-controllers#page_facing_up-dependencies), icub-main is not mentioned, but it seems to be a required dependency.

cc @SimoneMic feel free to add here any detail

[SimoneMic]

Yeah everything fine, did all the installation in https://icub-tech-iit.github.io/documentation/sw_installation/linux_from_sources_manual/

[lrapetti]

The dependency on whole-body-estimators is missing as well in case you want to run the simulation example (https://github.com/robotology/walking-controllers#computer-how-to-run-the-simulation), we could specify it in the documentation (also icub-models would be needed for running the example with iCub).

[GiulioRomualdi]

Hi @lrapetti and @SimoneMic, feel free to open a PR