fixes missing & in journal title

joss-paper/paper.bib

@@ -76,7 +76,7 @@ @article{hunter_matplotlib_2007
 	doi = {10.1109/MCSE.2007.55},
 	abstract = {Matplotlib is a 2D graphics package used for Python for application development, interactive scripting,and publication-quality image generation across user interfaces and operating systems},
 	number = {3},
-	journal = {Computing in Science Engineering},
+	journal = {Computing in Science & Engineering},
 	author = {Hunter, John D.},
 	month = may,
 	year = {2007},