Corrected typos

index.ipynb

@@ -121,7 +121,7 @@
     "id": "pcU2WAyQSAHt"
    },
    "source": [
-    "While you should not see the previous two screens that often, the next screen you will see each time you click \"Click Here to Launch Lesson\" when you have not used the SatrunCloud server for at least an hour or so. Just wait the 30 - 45 seconds for the server to spin up, then it will automatically open the ipython notebook."
+    "While you should not see the previous two screens that often, the next screen you will see each time you click \"Click Here to Launch Lesson\" when you have not used the SaturnCloud server for at least an hour or so. Just wait the 30 - 45 seconds for the server to spin up, then it will automatically open the ipython notebook."
    ]
   },
   {
@@ -215,7 +215,7 @@
     "id": "TpRGHl5CPJ6o"
    },
    "source": [
-    "An extraordinarly useful feature when working with the command line is tab completion. This allows you to hit the tab button to autocomplete names once you have made a unique specification.  \n",
+    "An extraordinarily useful feature when working with the command line is tab completion. This allows you to hit the tab button to autocomplete names once you have made a unique specification.  \n",
     "\n",
     "For example, if you navigate to your root directory by running the command `cd`, if you're on a Mac, you will probably have 2 folders within your root directory named \"Downloads\" and \"Documents\" (these are standard folder names created by default in most systems, although you may have renamed them, or your system may be different). With these, or longer folder names, it can sometimes become cumbersome to type the full folder name. Instead, you can start typing the command and folder name such as `cd Dow` and then press **tab** to autocomplete. Like magic, the command line should complete the statement correctly to be `cd Downloads`. (Note: this will not work if you have another folder that begins with \"Dow\". Similarly, if you just typed `cd D` or `cd Do` followed by **tab**, the command line will not autocomplete, as the selection is not unique, because **D** or **Do** could both refer to either **Documents** or **Downloads**. Also note that these commands are case sensitive, and folder capitalization much be matched exactly."
    ]