[TASK] change button id

public/index.html

@@ -101,7 +101,7 @@ <h2 class="hidden">Zahlungsmethoden</h2>
 							<a id="button-supporter" href="javascript:redirect_supporter()"><div class="column"><i class="fa fa-handshake-o" aria-hidden="true"></i><span>Fördermitglied</span></div></a>
 							<form id="form-stripe" name="_xclick" action="https://donate.stripe.com/00gcN930jboQcr6000" method="get" target="_top" autocomplete="off" class="nospace hidden">
 								<input type="hidden" name="__prefilled_amount" id="stripe-amount" value="25">
-								<button id="button-stripe-1" type="submit"><div class="column"><i class="fa fa-stripe" aria-hidden="true"></i><span>Stripe</span></div></button>
+								<button id="button-stripe" type="submit"><div class="column"><i class="fa fa-stripe" aria-hidden="true"></i><span>Stripe</span></div></button>
 							</form>
 							<a id="button-eps" class="disabled" href="javascript:swipe('EPS')"><div class="column"><img class="icon" src="./img/eps-logo.png" alt="" /><span>EPS</span></div></a>
 							<form id="form-paypal-1" name="_xclick" action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top" autocomplete="off" class="nospace">