Removing dead links and adding codecov badge. (aerleon#159)

Co-authored-by: Jason Benterou <[email protected]>

README.md

@@ -1,5 +1,5 @@
 ![GitHub](https://img.shields.io/github/license/aerleon/aerleon) [![PyPI version](https://badge.fury.io/py/aerleon.svg)](https://badge.fury.io/py/aerleon) ![PyPI - Status](https://img.shields.io/pypi/status/aerleon) ![PyPI - Downloads](https://img.shields.io/pypi/dm/aerleon)
-![PyPI - Python Version](https://img.shields.io/pypi/pyversions/aerleon) [![Code Style](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/ambv/black) ![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/aerleon/aerleon/main.yml?branch=main) ![Snyk Vulnerabilities for GitHub Repo](https://img.shields.io/snyk/vulnerabilities/github/aerleon/aerleon)
+![PyPI - Python Version](https://img.shields.io/pypi/pyversions/aerleon) [![Code Style](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/ambv/black) ![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/aerleon/aerleon/main.yml?branch=main) ![Snyk Vulnerabilities for GitHub Repo](https://img.shields.io/snyk/vulnerabilities/github/aerleon/aerleon)[![codecov](https://codecov.io/gh/aerleon/aerleon/branch/main/graph/badge.svg?token=C13SR6GMTD)](https://codecov.io/gh/aerleon/aerleon)
 
 # Aerleon
 

docs/index.md

@@ -8,9 +8,9 @@ Aerleon provides a per operating system configuration generator, each of which i
 
 The data primarily consists of:
 [comment]: <> (TODO Update these once we have those sections)
-* [Policy Files](../lib_policy/) that represent the actual firewall rules
-* [Address Files](../lib_address/) that represent the addresses, in the form of named objects
-* [Service Files](../lib_service/) that represent the services, in the form of named objects
+* Policy Files that represent the actual firewall rules.
+* Address Files that represent the addresses, in the form of named objects.
+* Service Files that represent the services, in the form of named objects.
 
 ### Supported Configuration Formats
 * Legacy Capirca formats