Simplify command imports in EmailTemplateController

Replaced specific Update command import with general Commands namespace import to streamline access to all command classes. No functional changes made.

EnvelopeGenerator.API/Controllers/EmailTemplateController.cs

@@ -1,6 +1,5 @@
 using AutoMapper;
 using EnvelopeGenerator.Application.EmailTemplates;
-using EnvelopeGenerator.Application.EmailTemplates.Commands.Update;
 using EnvelopeGenerator.Application.EmailTemplates.Commands.Reset;
 using EnvelopeGenerator.Application.EmailTemplates.Queries.Read;
 using Microsoft.AspNetCore.Authorization;
@@ -12,6 +11,7 @@ using DigitalData.Core.Abstraction.Application.Repository;
 using EnvelopeGenerator.Domain.Entities;
 using Microsoft.EntityFrameworkCore;
 using EnvelopeGenerator.Domain.Constants;
+using EnvelopeGenerator.Application.EmailTemplates.Commands;
 
 namespace EnvelopeGenerator.API.Controllers;