add intro to toc (#187)

* add intro to toc

* fix error

Author: jwilliams-mongo

source/includes/steps-ak8so-helm-quick-start.yaml

@@ -31,7 +31,7 @@ content: |
   
   - If you want |ak8so| to watch a particular set of |k8s-nss|, set the  ``--watchNamespaces`` 
     flag to a comma-separated list of |k8s-nss| to be watched.
-    For example, run the following command to watch only the ``atlas-operator``namespace:
+    For example, run the following command to watch only the ``atlas-operator`` namespace:
 
     .. code-block:: sh
 

source/index.txt

@@ -198,6 +198,7 @@ Get Hands-On Experience with |ak8so|
 .. toctree::
    :titlesonly:
 
+   Overview </index>
    Get Started </ak8so-get-started>
    Atlas Access </configure-ak8so-access-to-atlas>
    Import Projects </ak8so-import-projects>