adds info on phone number format

Created by: arthurgdn

src/app/members/account/edit-data/edit-data.component.html

@@ -47,10 +47,10 @@
           </div>
           <p class="text-center">Informations de contact</p>
           <mat-form-field class="full-width" >
-            <input matInput   type="text" formControlName="personalPhone" placeholder="Numéro de téléphone personnel" required>
+            <input matInput   type="text" formControlName="personalPhone" placeholder="Téléphone personnel sous la forme '0623456789' (sans espaces ni tirets)" required>
           </mat-form-field>
           <mat-form-field class="full-width" >
-            <input matInput   type="text" formControlName="parentsPhone" placeholder="Numéro de téléphone des parents" required>
+            <input matInput   type="text" formControlName="parentsPhone" placeholder="Téléphone des parents  sous la forme '0623456789' (sans espaces ni tirets)" required>
           </mat-form-field>
     
           <mat-form-field class="full-width" >