update qr dialog

frontend/src/lib/components/QR.svelte

@@ -7,7 +7,7 @@
 	export let errorCorrection = 'L'
 	export let background = '#fff'
 	export let color = '#000'
-	export let size = '300'
+	export let size = '500'
 	export let value = ''
 	export let padding = 10
 	export let className = 'qrcode'

frontend/src/routes/(app)/links/+page.svelte

@@ -244,6 +244,8 @@
 				Use this QR code to share the shortener.
 			</Dialog.Description>
 		</Dialog.Header>
-		<Qr value={data.shortener_url + '/' + qrCode} />
+		<div class="flex h-64 justify-center">
+			<Qr value={data.shortener_url + '/' + qrCode} />
+		</div>
 	</Dialog.Content>
 </Dialog.Root>