feat:#20 changed title headline to h1

frontend/src/view/DynamicPage.vue

@@ -47,9 +47,9 @@ const hasContent = computed(() => {
       class="flex align-items-center justify-content-center gap-3 mx-2 mb-4 transition-rolldown"
       :class="{ 'md:mt-8': hideContent }"
     >
-      <h3 class="text-4xl">
+      <h1 class="text-4xl">
         {{ headline }}
-      </h3>
+      </h1>
       <i v-if="icon" :class="icon" style="font-size: 2rem"></i>
     </div>
     <div v-if="subTitle" class="flex justify-content-center">

frontend/src/view/SettingsView.vue

@@ -21,9 +21,9 @@ function handleDarkModeToggled(isDarkVar: boolean) {
     <div
       class="flex align-items-center justify-content-center gap-3 mx-2 mb-4 transition-rolldown md:mt-8"
     >
-      <h3 class="text-4xl">
+      <h1 class="text-4xl">
         {{ $t("settings.headline") }}
-      </h3>
+      </h1>
       <i v-if="icon" :class="icon" style="font-size: 2rem"></i>
     </div>
     <div v-if="$t('settings.subTitle')" class="flex justify-content-center">

frontend/src/view/editCalendar/EditAdditionalModules.vue

@@ -34,9 +34,9 @@ async function nextStep() {
 <template>
   <div class="flex flex-column align-items-center w-full mb-7">
     <div class="flex align-items-center justify-content-center m-2">
-      <h3>
+      <h1>
         {{ $t("additionalModules.subTitle") }}
-      </h3>
+      </h1>
     </div>
     <AdditionalModuleTable />
     <div