fix: missing comma in bibtex entry in README.md

README.md

@@ -108,7 +108,7 @@ If you want to contribute scripts to this repo, please:
 author = {Larkin, Samuel and Joanis, Eric and Stewart, Darlene and Simard, Michel and Foster, George and Ueffing, Nicola and Tikuisis, Aaron},
 license = {MIT},
 title = {{Portage Text Processing}},
-url = {https://github.com/nrc-cnrc/PortageTextProcessing}
+url = {https://github.com/nrc-cnrc/PortageTextProcessing},
 year = {2022},
 }
 ```