DOC: Change from misc to article document class

Writing arXiv citations using the article class is more robust than
misc. You can run into issues with some .bst bibliography formats
using misc, such as ignoring the eprint and DOI metadata necessary
to actually indicate which paper it is and to link to the paper.

README.md

@@ -82,7 +82,7 @@ blastn -query unseen.fas -db train.fas -out results_unseen.tsv -outfmt 6 -num_th
 If you find BarcodeBERT useful in your research please consider citing:
 
 ```bibtex
-@misc{arias2023barcodebert,
+@article{arias2023barcodebert,
   title={{BarcodeBERT}: Transformers for Biodiversity Analysis},
   author={Pablo Millan Arias
     and Niousha Sadjadi
@@ -97,6 +97,7 @@ If you find BarcodeBERT useful in your research please consider citing:
     and Scott C. Lowe
     and Graham W. Taylor
   },
+  journal={arXiv preprint arXiv:2311.02401}
   year={2023},
   eprint={2311.02401},
   archivePrefix={arXiv},