Fix sphinx mark-up in acknowledgements section

Author: migueldvb

tutorials/UVES/UVES.ipynb

@@ -84,8 +84,8 @@
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      ":Authors: Moritz Guenther\n",
-      ":Copyright: 2013 Moritz Guenther\n",
+      "Authors: Moritz Guenther\n",
+      "Copyright: 2013 Moritz Guenther\n",
       "\n",
       "Based on observations made with ESO Telescopes at the La Silla Paranal Observatory\n",
       "under program ID 087.V0991(A)."