docs: add alt text to all images for accessibility

README.md

@@ -1,18 +1,40 @@
 <p align="center">
-    <a href="https://www.manim.community/"><img src="https://raw.githubusercontent.com/ManimCommunity/manim/main/logo/cropped.png"></a>
+    <a href="https://www.manim.community/">
+        <img src="https://raw.githubusercontent.com/ManimCommunity/manim/main/logo/cropped.png" alt="Manim Community Logo">
+    </a>
     <br />
     <br />
-    <a href="https://pypi.org/project/manim/"><img src="https://img.shields.io/pypi/v/manim.svg?style=flat&logo=pypi" alt="PyPI Latest Release"></a>
-    <a href="https://hub.docker.com/r/manimcommunity/manim"><img src="https://img.shields.io/docker/v/manimcommunity/manim?color=%23099cec&label=docker%20image&logo=docker" alt="Docker image"> </a>
-    <a href="https://mybinder.org/v2/gh/ManimCommunity/jupyter_examples/HEAD?filepath=basic_example_scenes.ipynb"><img src="https://mybinder.org/badge_logo.svg"></a>
-    <a href="http://choosealicense.com/licenses/mit/"><img src="https://img.shields.io/badge/license-MIT-red.svg?style=flat" alt="MIT License"></a>
-    <a href="https://www.reddit.com/r/manim/"><img src="https://img.shields.io/reddit/subreddit-subscribers/manim.svg?color=orange&label=reddit&logo=reddit" alt="Reddit" href=></a>
-    <a href="https://twitter.com/manim_community/"><img src="https://img.shields.io/twitter/url/https/twitter.com/cloudposse.svg?style=social&label=Follow%20%40manim_community" alt="Twitter">
-    <a href="https://www.manim.community/discord/"><img src="https://img.shields.io/discord/581738731934056449.svg?label=discord&color=yellow&logo=discord" alt="Discord"></a>
-    <a href="https://github.com/psf/black"><img src="https://img.shields.io/badge/code%20style-black-000000.svg" alt="Code style: black">
-    <a href="https://docs.manim.community/"><img src="https://readthedocs.org/projects/manimce/badge/?version=latest" alt="Documentation Status"></a>
-    <a href="https://pepy.tech/project/manim"><img src="https://pepy.tech/badge/manim/month?" alt="Downloads"> </a>
-    <img src="https://github.com/ManimCommunity/manim/workflows/CI/badge.svg" alt="CI">
+    <a href="https://pypi.org/project/manim/">
+        <img src="https://img.shields.io/pypi/v/manim.svg?style=flat&logo=pypi" alt="PyPI Latest Release Badge">
+    </a>
+    <a href="https://hub.docker.com/r/manimcommunity/manim">
+        <img src="https://img.shields.io/docker/v/manimcommunity/manim?color=%23099cec&label=docker%20image&logo=docker" alt="Docker Image Badge">
+    </a>
+    <a href="https://mybinder.org/v2/gh/ManimCommunity/jupyter_examples/HEAD?filepath=basic_example_scenes.ipynb">
+        <img src="https://mybinder.org/badge_logo.svg" alt="Launch Jupyter Notebooks with Binder Badge">
+    </a>
+    <a href="http://choosealicense.com/licenses/mit/">
+        <img src="https://img.shields.io/badge/license-MIT-red.svg?style=flat" alt="MIT License Badge">
+    </a>
+    <a href="https://www.reddit.com/r/manim/">
+        <img src="https://img.shields.io/reddit/subreddit-subscribers/manim.svg?color=orange&label=reddit&logo=reddit" alt="Reddit Subreddit Subscribers Badge">
+    </a>
+    <a href="https://twitter.com/manim_community/">
+        <img src="https://img.shields.io/twitter/url/https/twitter.com/cloudposse.svg?style=social&label=Follow%20%40manim_community" alt="Twitter Follow Badge">
+    </a>
+    <a href="https://www.manim.community/discord/">
+        <img src="https://img.shields.io/discord/581738731934056449.svg?label=discord&color=yellow&logo=discord" alt="Discord Community Badge">
+    </a>
+    <a href="https://github.com/psf/black">
+        <img src="https://img.shields.io/badge/code%20style-black-000000.svg" alt="Code Style: Black Badge">
+    </a>
+    <a href="https://docs.manim.community/">
+        <img src="https://readthedocs.org/projects/manimce/badge/?version=latest" alt="Documentation Status Badge">
+    </a>
+    <a href="https://pepy.tech/project/manim">
+        <img src="https://pepy.tech/badge/manim/month?" alt="Monthly Downloads Badge">
+    </a>
+    <img src="https://github.com/ManimCommunity/manim/workflows/CI/badge.svg" alt="Continuous Integration (CI) Status Badge">
     <br />
     <br />
     <i>An animation engine for explanatory math videos</i>