docs: add Audio and About tab screenshots to README

Author: jatinkrmalik

README.md

@@ -54,6 +54,14 @@ VocaMac is a native macOS menu bar application that transcribes your voice to te
   <em>Settings: General tab (left) and Models tab with resource monitoring (right)</em>
 </p>
 
+<p align="center">
+  <img src="docs/screenshots/settings-audio.png" alt="Settings - Audio" width="400">
+  &nbsp;&nbsp;
+  <img src="docs/screenshots/settings-about.png" alt="Settings - About" width="400">
+  <br>
+  <em>Settings: Audio tab (left) and About tab (right)</em>
+</p>
+
 <p align="center">
   <img src="docs/screenshots/cursor-indicator.png" alt="Cursor Indicator" width="400">
   <br>