fix some rst

README.rst

@@ -4,9 +4,9 @@
     :target: https://coveralls.io/github/pyradius/pyrad3?branch=master
 .. image:: https://img.shields.io/pypi/v/pyrad3.svg
     :target: https://pypi.python.org/pypi/pyrad3
-.. image:: https://img.shields.io/pypi/pyversions/pyrad.svg
+.. image:: https://img.shields.io/pypi/pyversions/pyrad3.svg
     :target: https://pypi.python.org/pypi/pyrad3
-.. image:: https://img.shields.io/pypi/dm/pyrad.svg
+.. image:: https://img.shields.io/pypi/dm/pyrad3.svg
     :target: https://pypi.python.org/pypi/pyrad3
 
 Introduction
@@ -20,10 +20,12 @@ This is the successor of pyrad. It is written in python3 only (python3.7+) and
 has an improved API.
 
 Requirements & Installation
-===========================
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 pyrad requires Python 3.7 or later. Currently no external dependencies are
-needed to use pyrad3:: cli
+needed to use pyrad3:
+
+.. code-block:: cli
 
   # Install from pypi
   pip install pyrad3
@@ -38,7 +40,7 @@ needed to use pyrad3:: cli
   poetry install # for development
 
 Development
-===========
+~~~~~~~~~~~
 
 pyrad3 usese quite a lot of linters and development tools:
 
@@ -46,12 +48,14 @@ pyrad3 usese quite a lot of linters and development tools:
 - black
 - poetry
 - pytest
+
   - pytest-black
   - pytest-cov
   - pytest-flake8
   - pytest-isort
   - pytest-mypy
   - pytest-pylint
+
 - tox
 - sphinx
 
@@ -89,7 +93,7 @@ To execute a test with a single python version run `tox -e $version`, e.g.
 `tox -e py38`.
 
 License
-=======
+~~~~~~~
 
 pyrad3 is distributed under the terms of both the MIT License and the Apache
 License (Version 2.0).