docs: improve browser support table accessibility in README (#7115)

- Add proper table headers for better screen reader accessibility
  - Include descriptive alt text for browser logo images
  - Restructure table layout for improved readability
  - Remove redundant IE 11 entry that was misaligned

Co-authored-by: Jay <jasonsaayman@gmail.com>

README.md

@@ -108,9 +108,10 @@
 
 ## Browser Support
 
-![Chrome](https://raw.githubusercontent.com/alrra/browser-logos/main/src/chrome/chrome_48x48.png) | ![Firefox](https://raw.githubusercontent.com/alrra/browser-logos/main/src/firefox/firefox_48x48.png) | ![Safari](https://raw.githubusercontent.com/alrra/browser-logos/main/src/safari/safari_48x48.png) | ![Opera](https://raw.githubusercontent.com/alrra/browser-logos/main/src/opera/opera_48x48.png) | ![Edge](https://raw.githubusercontent.com/alrra/browser-logos/main/src/edge/edge_48x48.png) |
---- | --- | --- | --- | --- |
-Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | 11 ✔ |
+| Chrome | Firefox | Safari | Opera | Edge |
+|:------:|:-------:|:------:|:-----:|:----:|
+| ![Chrome browser logo](https://raw.githubusercontent.com/alrra/browser-logos/main/src/chrome/chrome_48x48.png) | ![Firefox browser logo](https://raw.githubusercontent.com/alrra/browser-logos/main/src/firefox/firefox_48x48.png) | ![Safari browser logo](https://raw.githubusercontent.com/alrra/browser-logos/main/src/safari/safari_48x48.png) | ![Opera browser logo](https://raw.githubusercontent.com/alrra/browser-logos/main/src/opera/opera_48x48.png) | ![Edge browser logo](https://raw.githubusercontent.com/alrra/browser-logos/main/src/edge/edge_48x48.png) |
+| Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ |
 
 [![Browser Matrix](https://saucelabs.com/open_sauce/build_matrix/axios.svg)](https://saucelabs.com/u/axios)