polish index a bit

Author: Teque5

docs/source/index.rst

@@ -2,39 +2,39 @@
 Welcome to SigMF!
 =================
 
-**sigmf** is a Python library for working with radio recordings captured in
-``.sigmf`` format according to the `SigMF standard <https://sigmf.org/>`_. It
-offers a *simple* and *intuitive* API for python developers.
+**SigMF** is a Python library for working with radio recordings in
+``.sigmf`` format according to the `SigMF standard <https://sigmf.org/>`_.
+It offers a *simple* and *intuitive* API for Python developers.
 
 ..
-   Note below toolversion & specversion are replaced dynamically during build.
+   Note: The toolversion & specversion below are replaced dynamically during build.
 
-This version |toolversion| of the library coincides with version |specversion|
-of the specification.
+This documentation is for version |toolversion| of the library, which is
+compatible with version |specversion| of the SigMF specification.
 
-Check out the :doc:`quickstart` section for further information, including
-how to :ref:`install` the project.
+To get started, see the :doc:`quickstart` section or learn how to :ref:`install` the library.
 
+-----
 
 .. toctree::
    :maxdepth: 1
+   :caption: Getting Started
    :hidden:
-   :caption: SigMF
 
    quickstart
    advanced
    developers
 
 .. toctree::
    :maxdepth: 1
-   :hidden:
    :caption: Community
+   :hidden:
 
    faq
 
 .. toctree::
    :maxdepth: 1
-   :hidden:
    :caption: API Reference
+   :hidden:
 
-   api
+   api