Fixed broken link in docstring of inversion
Fixed broken link in docstring of inversion

santis19/fatiando,eusoubrasileiro/fatiando,eusoubrasileiro/fatiando,eusoubrasileiro/fatiando_seismic,mtb-za/fatiando,victortxa/fatiando,fatiando/fatiando,eusoubrasileiro/fatiando,santis19/fatiando,cmeessen/fatiando,drandykass/fatiando,rafaelmds/fatiando,drandykass/fatiando,victortxa/fatiando,mtb-za/fatiando,fatiando/fatiando,cmeessen/fatiando,rafaelmds/fatiando,eusoubrasileiro/fatiando_seismic