Update CAP_extension.json

[dosumis]

Fixes #59

[dosumis]

Needs test example. @mfutey - do you have some examples of categories from curation (Maybe categories are something we only expect to get from CAP?)

[mfutey]

@dosumis the category is the parent value for the value in the [cellannotation_setname], here is an example from a retina dataset:

cluster2--cell_fullname	cluster2--cell_ontology_term_id	cluster2--cell_ontology_term	cluster2--category_fullname	cluster2--category_cell_ontology_exists	cluster2--category_cell_ontology_term_id	cluster2--category_cell_ontology_term
flat midget bipolar	CL:4033033	flat midget bipolar cell	cone OFF	True	CL:0000750	OFF-bipolar cell

[dosumis]

Hi @mfutey - thanks for the example. I'll use it for a test. Do you have a whole sheet or anndata file that this comes from?

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