non-functional linking in how-do-i-use-ome-zarr section of homepage

[psobolewskiPhD]

The links to tools and data in this section of the homepage don't work correctly.
https://ngff.openmicroscopy.org/#how-do-i-use-ome-zarr
If you mouse-over in the browser, appear to be coded as anchors and not links so they just don't point to anything.

[lubianat]

thanks, @psobolewskiPhD !

I fixed it in #561 and many other broken internal links (adding a check with html-proofer, #535, so these things are harder to happen in the future)