update alt-text

Author: Teque5

README.md

@@ -1,8 +1,8 @@
-<p align="center"><img src="https://github.com/sigmf/SigMF/blob/v1.2.0/logo/sigmf_logo.png" alt="Rendered SigMF Logo"/></p>
+![Rendered SigMF Logo](https://raw.githubusercontent.com/sigmf/SigMF/refs/heads/main/logo/sigmf_logo.png)
 
-[![Read the Docs](https://img.shields.io/readthedocs/sigmf)](https://sigmf.readthedocs.io/en/latest/)
-[![GitHub Actions Workflow Status](https://img.shields.io/github/actions/workflow/status/sigmf/sigmf-python/main.yml)](https://github.com/sigmf/sigmf-python/actions?query=branch%3Amain)
-[![PyPI - Downloads](https://img.shields.io/pypi/dm/sigmf)](https://pypi.org/project/SigMF/)
+[![Documentation Shield](https://img.shields.io/readthedocs/sigmf)](https://sigmf.readthedocs.io/en/latest/)
+[![Build Status Shield](https://img.shields.io/github/actions/workflow/status/sigmf/sigmf-python/main.yml)](https://github.com/sigmf/sigmf-python/actions?query=branch%3Amain)
+[![PyPI Downloads Shield](https://img.shields.io/pypi/dm/sigmf)](https://pypi.org/project/SigMF/)
 
 This python module makes it easy to interact with Signal Metadata Format
 (SigMF) recordings. This module works with Python 3.7+ and is distributed