Configuring the documentation for Sphinx and ReadTheDocs

docs/CONTRIBUTING.md

@@ -1,7 +1,7 @@
 # `linumpy` coding standards
 
 * We use the [PEP8](https://peps.python.org/pep-0008/) coding standard
-* OME-Zarr format extension should be `ome.zarr`, as shown in the NGFF documentation ([URL](https://ngff.openmicroscopy.org/0.4/index.html#bf2raw-layout))
+* OME-Zarr format extension should be `.ome.zarr`, as shown in the NGFF documentation ([URL](https://ngff.openmicroscopy.org/0.4/index.html#bf2raw-layout))
 * All scripts/methods should explicitly document the expected resolutions and dimensions units
 * We use Numpy style docstrings: https://numpydoc.readthedocs.io/en/latest/format.html
 * The axis order should be Z, Y, X