unhide TOC tree on start page (#67)

* unhide TOC tree on start page

* limit tree depth

docs/source/index.rst

@@ -3,16 +3,16 @@ Space Telescope Environment (``stenv``)
 
 ``stenv`` is a set of installable Conda environments maintained by the `Space Telescope Science Institute (STScI) <http://www.stsci.edu/>`_ in Baltimore, Maryland. These environments provide tools and utilities required to process and analyze data from the Hubble Space Telescope (HST), James Webb Space Telescope (JWST), and others.
 
-If you have issues with ``stenv``, please `create a new GitHub issue <https://github.com/spacetelescope/stenv/issues>`_ or contact one of the following help desks:
-
-* **HST Help Desk:** https://stsci.service-now.com/hst
-
-* **JWST Help Desk:** https://stsci.service-now.com/jwst
-
 .. toctree::
-   :hidden:
+   :maxdepth: 1
 
    getting_started.rst
    environments.rst
    astroconda.rst
    developer_notes.rst
+
+If you have issues with ``stenv``, please `create a new GitHub issue <https://github.com/spacetelescope/stenv/issues>`_ or contact one of the following help desks:
+
+* **HST Help Desk:** https://stsci.service-now.com/hst
+
+* **JWST Help Desk:** https://stsci.service-now.com/jwst