fix: typo Refactory -> Refractory

[e-t-k]

Typo. see Concept Code C38014 ( https://nciterms.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI_Thesaurus&code=C38014&ns=ncit )

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[GeoffLyle]

Note that this typo (Refactory) is in the CDE itself (https://cadsr.cancer.gov/onedata/dmdirect/NIH/NCI/CO/CDEDD?filter=CDEDD.ITEM_ID=12217251%20and%20ver_nr=1).

I have brought this up the folks at the NIH and Leidos. Hopefully this gets corrected soon. I'm torn between using the 'correct' value ("Refractory") and what is currently in the CDE.

[claymcleod]

Good catch! We discussed this in our meeting yesterday, and we decided to keep the misspelling for now—our goal is to match the CDE exactly. Once the CDE is updated (which is sounds like we are talking to them now to fix), I will accept this PR.

[GeoffLyle]

Not sure when the CDE was updated (couldn't find a change history in the 'Audit Trail' section of the CDE), but it looks like the typo has been fixed. The permissible value is now "Refractory" and the VM Long Name is also "Refractory".

Link to CDE 12217251: https://cadsr.cancer.gov/onedata/dmdirect/NIH/NCI/CO/CDEDD?filter=CDEDD.ITEM_ID=12217251%20and%20ver_nr=1

[claymcleod]

Great! We can merge in now @e-t-k