Update ApJ paper reference

Author: migueldvb

tutorials/UVES/UVES.ipynb

@@ -54,7 +54,7 @@
       "below is taken (with only minor modifications) from the code that I used to\n",
       "actually prepare the publication. The plots that will be developed below\n",
       "appear in very similar form in the article published in\n",
-      "[ApJ, Volume 771, Issue 1, article id. 70, 12 pp](http://adsabs.harvard.edu/abs/2013ApJ...771...70G).\n",
+      "[ApJ, 771, 1, 70](http://adsabs.harvard.edu/abs/2013ApJ...771...70G).\n",
       "\n",
       "The examples below depend on each other and the plots in the last section make\n",
       "use of things calculated in the earlier sections. Thus, if you need to restart\n",