fix comma

Author: adrn

tutorials/Plot-Catalog/plot-catalog.ipynb

@@ -5,7 +5,7 @@
    "date": "July 2013",
    "link_name": "Read and plot catalog information from a text file",
    "name": "",
-   "published": true
+   "published": true,
    "description" : "Demonstrates use of astropy.io.ascii for reading and writing ASCII data, astropy.coordinates and astropy.units for converting RA (as a sexagesimal angle) to decimal degrees, and matplotlib for making a color-magnitud diagram and on-sky locations in a mollweide projection."
   },
   "signature": "sha256:a6948119e622634bad34bb4d1b7bcbb59e84cab95025724098127104a63cc42c"