new RST files for doc update

docs/notebooks/exclusion_zones.ipynb

docs/notebooks/regular_grid_optimization.ipynb

docs/notebooks/roads_and_cables.ipynb

docs/source/advanced_examples.rst

docs/source/advanced_examples_nblinks/bathymetry_nb.nblink

...ource/advanced_examples_nblinks/exclusion_zones_nb.nblink

...vanced_examples_nblinks/hub_height_optimization_nb.nblink

...urce/advanced_examples_nblinks/layout_and_loads_nb.nblink

docs/source/advanced_examples_nblinks/mongodb_nb.nblink

docs/source/advanced_examples_nblinks/openmdao_checks.out

...nced_examples_nblinks/regular_grid_optimization_nb.nblink

...urce/advanced_examples_nblinks/roads_and_cables_nb.nblink

...ed_examples_nblinks/unconstrained_wake_steering_nb.nblink

...vanced_examples_nblinks/wake_steering_and_loads_nb.nblink

docs/source/api.rst

docs/source/basic_examples_nblinks/constraints_nb.nblink

docs/source/basic_examples_nblinks/cost_models_nb.nblink

.../source/basic_examples_nblinks/design_variables_nb.nblink

docs/source/basic_examples_nblinks/drivers_nb.nblink

docs/source/basic_examples_nblinks/problems_nb.nblink