fixed favicon

index.html

@@ -6,6 +6,7 @@
    <meta http-equiv="Content-Security-Policy" content="default-src 'none'; style-src-elem 'self' 'unsafe-inline'; script-src 'self' https://cdnjs.cloudflare.com 'unsafe-inline' 'unsafe-eval'; img-src 'self'" >
    <meta http-equiv="Permissions-Policy" content="accelerometer=(), ambient-light-sensor=(), autoplay=(), battery=(), camera=(), cross-origin-isolated=(), display-capture=(), document-domain=(), encrypted-media=(), execution-while-not-rendered=(), execution-while-out-of-viewport=(), fullscreen=(), geolocation=(), gyroscope=(), keyboard-map=(), magnetometer=(), microphone=(), midi=(), navigation-override=(), payment=(), picture-in-picture=(), publickey-credentials-get=(), screen-wake-lock=(), sync-xhr=(), usb=(), web-share=(), xr-spatial-tracking=(), clipboard-read=(), clipboard-write=(), gamepad=(), speaker-selection=(), conversion-measurement=(), focus-without-user-activation=(), hid=(), idle-detection=(), interest-cohort=(), serial=(), sync-script=(), trust-token-redemption=(), unload=(), window-placement=(), vertical-scroll=()" >
    <title>Compute SHA-1 from CSV in browser</title>
+   <link rel="icon" type="image/x-icon" href="favicon.png">
    <style>
       #options {
          display: none;