fix README text aligned to center

Author: vixalien

README.md

@@ -3,14 +3,16 @@
 
 # Decibels
 
-> Note: This app is still in development, and may not be stable.
-
 Play audio files.
 
 ![The main view of Decibels.](./data/screenshots/screenshot-1.png)
 
 ![Decibels in dark mode and on a mobile.](./data/screenshots/screenshot-2.png)
 
+</div>
+
+> Note: This app is still in development, and may not be stable.
+
 ## Installing
 
 ### Flathub