🍱 MQT Branding (#392)

## Description

This PR adjusts the repository with the latest MQT branding changes.

## Checklist:

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- [x] The pull request only contains commits that are related to it.
- [x] I have added appropriate tests and documentation.
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project's style guidelines.

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Signed-off-by: burgholzer <burgholzer@me.com>

README.md

@@ -7,15 +7,17 @@
 [![codecov](https://img.shields.io/codecov/c/github/cda-tum/mqt-qcec?style=flat-square&logo=codecov)](https://codecov.io/gh/cda-tum/mqt-qcec)
 
 <p align="center">
- <picture>
-   <source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/cda-tum/qcec/main/docs/source/_static/mqt_light.png" width="60%">
-   <img src="https://raw.githubusercontent.com/cda-tum/qcec/main/docs/source/_static/mqt_dark.png" width="60%">
- </picture>
- </p>
+  <a href="https://mqt.readthedocs.io">
+   <picture>
+     <source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/cda-tum/mqt/main/docs/_static/mqt_light.png" width="60%">
+     <img src="https://raw.githubusercontent.com/cda-tum/mqt/main/docs/_static/mqt_dark.png" width="60%">
+   </picture>
+  </a>
+</p>
 
 # MQT QCEC - A tool for Quantum Circuit Equivalence Checking
 
-A tool for quantum circuit equivalence checking developed as part of the [_Munich Quantum Toolkit_](https://mqt.readthedocs.io) (_MQT_) by the [Chair for Design Automation](https://www.cda.cit.tum.de/) at the [Technical University of Munich](https://www.tum.de/).
+A tool for quantum circuit equivalence checking developed as part of the [_Munich Quantum Toolkit (MQT)_](https://mqt.readthedocs.io) by the [Chair for Design Automation](https://www.cda.cit.tum.de/) at the [Technical University of Munich](https://www.tum.de/).
 It builds upon [MQT Core](https://github.com/cda-tum/mqt-core), which forms the backbone of the MQT.
 
 <p align="center">
@@ -88,17 +90,17 @@ Munich Quantum Valley, which is supported by the Bavarian state government with
 
 <p align="center">
 <picture>
-<source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/cda-tum/mqt-core/main/docs/_static/tum_dark.svg" width="28%">
-<img src="https://raw.githubusercontent.com/cda-tum/mqt-core/main/docs/_static/tum_light.svg" width="28%">
+<source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/cda-tum/mqt/main/docs/_static/tum_dark.svg" width="28%">
+<img src="https://raw.githubusercontent.com/cda-tum/mqt/main/docs/_static/tum_light.svg" width="28%" alt="TUM Logo">
 </picture>
 <picture>
-<img src="https://raw.githubusercontent.com/cda-tum/mqt-core/main/docs/_static/logo-bavaria.svg" width="16%">
+<img src="https://raw.githubusercontent.com/cda-tum/mqt/main/docs/_static/logo-bavaria.svg" width="16%" alt="Coat of Arms of Bavaria">
 </picture>
 <picture>
-<source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/cda-tum/mqt-core/main/docs/_static/erc_dark.svg" width="24%">
-<img src="https://raw.githubusercontent.com/cda-tum/mqt-core/main/docs/_static/erc_light.svg" width="24%">
+<source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/cda-tum/mqt/main/docs/_static/erc_dark.svg" width="24%">
+<img src="https://raw.githubusercontent.com/cda-tum/mqt/main/docs/_static/erc_light.svg" width="24%" alt="ERC Logo">
 </picture>
 <picture>
-<img src="https://raw.githubusercontent.com/cda-tum/mqt-core/main/docs/_static/logo-mqv.svg" width="28%">
+<img src="https://raw.githubusercontent.com/cda-tum/mqt/main/docs/_static/logo-mqv.svg" width="28%" alt="MQV Logo">
 </picture>
 </p>