Update Custom Display Logic.ipynb

HTML `<a>` tag used for `Rich Output` link

Author: justineuro

examples/IPython Kernel/Custom Display Logic.ipynb

@@ -18,7 +18,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "As described in the [Rich Output](Rich Output.ipynb) tutorial, the IPython display system can display rich representations of objects in the following formats:\n",
+    "As described in the <a href='Rich Output.ipynb' target='_blank'>Rich Output</a> tutorial, the IPython display system can display rich representations of objects in the following formats:\n",
     "\n",
     "* JavaScript\n",
     "* HTML\n",