change "Absenden" to "Prüfen"

index.html

@@ -58,7 +58,7 @@ <h1>Max-Matrix-Multiplikationsspiel</h1>
                 <input type="text" class="input-field" id="answer11" placeholder="C [2][2]">
             </div>
         </form>
-        <button id="submitButton" onclick="checkAnswer()">Absenden</button>
+        <button id="submitButton" onclick="checkAnswer()">Prüfen</button>
         <div id="correct-message"></div>
         <div id="wrong-message"></div>
         <div id="score">Punktestand: 0</div>