#55929 - Fix in newsletter component (#250)

Author: Joanna Szczęch

src/molecules/newsletter/Newsletter.html

@@ -35,7 +35,7 @@
     </a-label>
 
     <!-- @slot Button (Named slot) -->
-    <slot name="button"></slot>
+    <slot name="button">
       <a-button
         class="a-newsletter__button"
         @click.native.stop.prevent="onSubmit"