Update Capturing Output.ipynb

HTML `<a>` tag is used for `cell magic` link to file `Cell Magics.ipynb` since the space in the file name prevents Markdown from rendering `[cell magic](Cell Magics.ipynb)`

Author: justineuro

examples/IPython Kernel/Capturing Output.ipynb

@@ -11,7 +11,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "IPython has a [cell magic](Cell Magics.ipynb), `%%capture`, which captures the stdout/stderr of a cell. With this magic you can discard these streams or store them in a variable."
+    "IPython has a <a href='Cell Magics.ipynb' target='_blank'>cell magic</a>, `%%capture`, which captures the stdout/stderr of a cell. With this magic you can discard these streams or store them in a variable."
    ]
   },
   {