Updated comments

ref #5

src/controllers/PdfController.ts

@@ -13,6 +13,7 @@ export class PdfController {
     @Post('/contracts')
     @OpenAPI({ description: "Generate Sponsoring contract pdfs from runner objects." })
     async generateContracts(@Body({ validate: true }) runner: Runner, @Res() res: any, @QueryParam("locale") locale: string) {
+        await this.pdf;
         const contracts = await this.pdf.generateSponsoringContract(runner, locale);
         res.setHeader('content-type', 'application/pdf');
         return await contracts;