Use OLS API to resolve the label of ontology URIs in methods page

[egonw]

cloud/docs/methods/alamar_blue_assay_for_detection_of_mitochondrial_activity.json

Line 21 in 0f34273

"ontology_term_content": "http://purl.enanomapper.org/onto/ENM_8000224",

Since the link cannot be resolved directly, maybe consider:

1. showing the label of the ontology item
2. use BioPortal or OLS to resolve the ontology term IRI

Reported by @FrankHepkema

[egonw]

Also applies to https://platform.vhp4safety.nl/methods/real_time_polymerase_chain_reaction