corrected AM dto + entity

src/entities/assistantes_maternelles.entity.ts

@@ -34,9 +34,9 @@ export class AssistanteMaternelle {
   @Column({ name: 'biographie', type: 'text', nullable: true })
   biography?: string;
 
-  @Column({ name: 'disponible', type: 'boolean', default: true })
-  available: boolean;
+  @Column({ name: 'disponible', type: 'boolean', default: true, nullable: true })
+  available?: boolean;
 
   @Column({ name: 'ville_residence', length: 100, nullable: true })
-  city?: string;
+  residence_city?: string;
 }