use png for f-droid

Author: NiklasMerz

assets/images/get-it-on.png

@@ -23,7 +23,7 @@ <h2>CanIAndroidWebView</h2>
 		</a>
 		<a href="https://f-droid.org/packages/com.caniwebview.android/"
 			style="display: inline-block; padding-top: 20px">
-			<img alt="Get it on F-Droid" src="/assets/images/get-it-on.svg"
+			<img alt="Get it on F-Droid" src="/assets/images/get-it-on.png"
 				style="width: 270px; height: 80px;" />
 		</a>
 	</section>