Add link to Adrien Bartoli's dataset webpage

[tvercaut]

The following links http://igt.ip.uca.fr/~ab/code_and_datasets/index.php http://igt.ip.uca.fr/~ab/code_and_datasets/datasets/ could be provided as part of the "Repositories holding multiple datasets" section: https://github.com/luiscarlosgph/list-of-surgical-tool-datasets#repositories-holding-multiple-datasets

[luiscarlosgph]

Done.