fix broken bib file

paper/joss-raphtory.bib

@@ -64,7 +64,7 @@ @article{yousaf2023non
   title={Non-{Markovian} paths and cycles in NFT trades},
   author={Yousaf, Haaroon and Arnold, Naomi A and Lambiotte, Renaud and LaRock, Timothy and Clegg, Richard G and Zhong, Peijie and Alnaimi, Alhamza and Steer, Ben},
   journal={arXiv preprint arXiv:2303.11181},
-  doi={10.48550/arXiv.2303.11181}
+  doi={10.48550/arXiv.2303.11181},
   year={2023}
 }
 
@@ -103,7 +103,7 @@ @article{zhang2015dynamic
   title={Dynamic network analysis in {Julia}},
   author={Zhang, Weijian},
   year={2015},
-  publisher={Manchester Institute for Mathematical Sciences, University of Manchester}
+  publisher={Manchester Institute for Mathematical Sciences, University of Manchester},
   howpublished={\url{https://eprints.maths.manchester.ac.uk/2376/}}
 }
 
@@ -119,7 +119,7 @@ @techreport{hagberg2008exploring
   title={Exploring network structure, dynamics, and function using NetworkX},
   author={Hagberg, Aric and Swart, Pieter and S Chult, Daniel},
   year={2008},
-  howpublished = {\url{https://www.osti.gov/biblio/960616}}
+  howpublished = {\url{https://www.osti.gov/biblio/960616}},
   institution={Los Alamos National Lab.(LANL), Los Alamos, NM (United States)}
 }