Standardize assembly casing in apis / add descriptions for accepted values

[riyavsinha]

I think some of the endpoints require lowercase assembly eg ccre biosamples has lowercase grch38 (link)[https://github.com/weng-lab/SCREEN2.0/blob/main/screen2.0/src/app/search/_ccredetails/inspecificbiosample.tsx#L185], while others like ccre tf use GRCh38 (link)[https://github.com/weng-lab/SCREEN2.0/blob/main/screen2.0/src/app/search/_ccredetails/inspecificbiosample.tsx#L196]

based on trying to use it, each of those didn't work when trying to use the other, so I had to look at the code to understand how to use it

[jpfisher72]

Hi @riyavsinha! Yeah right now some things in our backend are not standardized, such at this. Sorry for the confusion. I also see that the link to our API documentation on the about page is not working, but that should be fixed soon. For a long time it has just been our frontend accessing the API so we could get away with being a bit unstandardized, but we are working to clean up the API a bit to make it usable for the public

[riyavsinha]

no worries, just wanted to flag it for later; thank you all again for such a fantastic resource! the api structure is looking great overall