crossmatch tutorial

Author: adrn

tutorials/notebooks/astropy-coordinates/2-Coordinates-Transforms.ipynb

@@ -15,7 +15,7 @@
     "* Introduce coordinate frame transformations and demonstrate transforming from ICRS coordinates to Galactic and Altitude-Azimuth coordinates\n",
     "\n",
     "## Keywords\n",
-    "coordinates\n",
+    "coordinates, OOP\n",
     "\n",
     "\n",
     "## Summary\n",