Fixed nested array type error with new IPaginatedResults type

[metasloth]

My recent PR #477 added redundant array type signature responses because I forgot how generics work 🤦 .

This makes typescript think that the promise results are an array of arrays, as seen below:

I removed all erroneous array signatures and actually tested the code in practice this time to make sure it works as expected!

[coveralls]

Coverage remained the same at 100.0% when pulling 18977e77add2000fe6d8195cc275ab38b756a17f on metasloth:master into 78735628ea0393402eafa11c98d6b4aed5a9591a on MONEI:master.

[lpinca]

Thank you.