NEP: add NEP 56 mailing list resolution (numpy#26155)

* NEP: add NEP 56 mailing list resolution
[skip cirrus] [skip azp] [skip travis]

* NEP: mark NEP 56 as Final
[skip azp] [skip travis] [skip cirrus]

Author: lucascolley

doc/neps/nep-0056-array-api-main-namespace.rst

@@ -7,11 +7,11 @@ NEP 56 — Array API standard support in NumPy's main namespace
 :Author: Ralf Gommers <[email protected]>
 :Author: Mateusz Sokół <[email protected]>
 :Author: Nathan Goldbaum <[email protected]>
-:Status: Accepted
+:Status: Final
 :Replaces: 30, 31, 37, 47
 :Type: Standards Track
 :Created: 2023-12-19
-:Resolution: TODO mailing list link (after acceptance)
+:Resolution: https://mail.python.org/archives/list/[email protected]/message/Z6AA5CL47NHBNEPTFWYOTSUVSRDGHYPN/
 
 
 Abstract