pdf: fix route

Signed-off-by: Rodrigo Bertoldo de Sousa Martins <rodrigo.sousa.577@gmail.com>

backend/controllers/pdfController.ts

@@ -1,6 +1,6 @@
 import { Request, Response } from 'express';
 import { PrismaClient } from '@prisma/client';
-import { PDFService } from '../services/pdfService';
+import { PDFService } from '../../src/services/pdfService';
 import multer from 'multer';
 import path from 'path';
 import fs from 'fs/promises';