Little bugfix

ref #13

src/controllers/RunnerController.ts

@@ -84,7 +84,7 @@ export class RunnerController {
 	@ResponseSchema(RunnerNotFoundError, { statusCode: 404 })
 	@OpenAPI({ description: 'Delete a specified runner (if it exists).' })
 	async remove(@Param('id') id: number, @QueryParam("force") force: boolean) {
-		let runner = await this.runnerRepository.findOne({ id: id });
+		const runner = await this.runnerRepository.findOne({ id: id });
 
 		if (!runner) {
 			throw new RunnerNotFoundError();