fix: api call duplication

Author: swyth-dev

frontend/realtime-emergency-app/src/app/components/medical-specialization-selector/medical-specialization-selector.component.html

@@ -27,7 +27,7 @@
 
         <div class="actions">
           <mat-card-actions>
-            <button mat-raised-button color="primary" (click)="onSelectSpecialization()"
+            <button mat-raised-button color="primary" type="submit"
                     [disabled]="!specializationControl.value">
               Confirm
             </button>