content/jupyter: Minor updates and links

Author: rkdarst

content/jupyter.ipynb

@@ -95,7 +95,8 @@
     "There are different types of cells: primarily **code** cells and **markdown** cells.  You can switch between them with the menu bar above.  Code cells run whatever language your notebook uses.  Markdown is a lightweight way of giving *style* to `text` - you can check out [this reference](https://commonmark.org/help/). For example the previous sentence is:\n",
     "\n",
     "```none\n",
-    "Markdown is a lightweight way of giving *style* to `text` - you can check out [this reference](https://commonmark.org/help/).\n",
+    "Markdown is a lightweight way of giving *style* to `text` - you \n",
+    "can check out [this reference](https://commonmark.org/help/).\n",
     "```\n",
     "\n",
     "![notebook UI](img/jupyter/notebook-ui.png)"
@@ -200,7 +201,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "In addition to raw cells, there are **magics**, which exist outside of Python.  They are a property of the runtime itself (in Python's case, they come from **IPython**.  For example, the following cell magic `%%bash` turns the cell into a shell script (may not work on all operating systems):"
+    "In addition to raw cells, there are **magics**, which exist outside of Python.  They are a property of the runtime itself (in Python's case, they come from **IPython**.  For example, the following cell magic [%%bash](https://ipython.readthedocs.io/en/stable/interactive/magics.html#cellmagic-bash)  turns the cell into a shell script (may not work on all operating systems):"
    ]
   },
   {
@@ -247,7 +248,7 @@
     "\n",
     "   3. Make a Markdown cell above your code cell and give it a title and some description of your function.  Use the [reference](https://commonmark.org/help/) to add a heading, bullet list, and some (bold, italic, or inline code)\n",
     "\n",
-    "   4. Use the ``%%timeit`` magic function to time your Fibonacci\n",
+    "   4. Use the [%%timeit](https://ipython.readthedocs.io/en/stable/interactive/magics.html#magic-timeit) magic function to time your Fibonacci\n",
     "      function.\n",
     "\n",
     "   5. Again using ``%%timeit``, figure out the fastest way to sum the\n",