fix: 226 deposit form add more space to enter the title on the first step

https://issues.unige.ch/browse/AOU-226

src/app/features/deposit/components/presentationals/deposit-form-first-step-type/deposit-form-first-step-type.presentational.html

 <form *ngIf="form"
       [formGroup]="form"
-      class="form-two-columns"
+      class="form"
 >
-  <div class="two-columns-wrapper">
     <div class="left-part">
       <div class="is-manual-retrieve">
         <mat-label>{{labelTranslateEnum.sourceOfDocumentReferences | translate}}</mat-label>
@@ -144,7 +143,5 @@
         </mat-form-field>
       </ng-template>
     </div>
-  </div>
-
 </form>