fix: faltaba un caso de uso

Documentacion/CasosDeUso/CasosDeUso.org

@@ -3,6 +3,7 @@
 * Usuario Gestiona un Producto
 #+begin_src plantuml :file registroProducto.jpg
 @startuml
+left to right direction
 actor "Cliente" <<Persona>> as fc
 rectangle GestionProductos {
   usecase "Gestionar Productos" as UC1
@@ -10,7 +11,7 @@ rectangle GestionProductos {
   usecase "Modificar Productos" as UC3
   usecase "Eliminar Producto" as UC4
   usecase "Registrar Producto" as UC5
-
+  usecase "Seleccionar Proveedor" as uc7
   usecase "Gestionar Categorias" as uc6
 }
 fc --> UC1
@@ -18,6 +19,7 @@ UC1 ..> UC2: "include"
 UC3 ..> UC1: "extend"
 UC4 ..> UC1: "extend"
 UC5 ..> UC1: "extend"
+UC5 ..> uc7: "include"
 
 UC3 .> uc6: "include"
 UC5 .> uc6: "include"
@@ -49,6 +51,7 @@ UC5 ..> UC1: "extend"
 
 #+begin_src plantuml :file RegistroFacturas.jpg
 @startuml
+left to right direction
 actor "Cliente" <<Persona>> as fc
 rectangle RegistrarFacturas {
   usecase "Gestionar Facturas" as uc0