Fixed typo

ref #49

src/controllers/RunnerController.ts

@@ -69,7 +69,7 @@ export class RunnerController {
 	@ResponseSchema(ResponseRunner)
 	@ResponseSchema(RunnerNotFoundError, { statusCode: 404 })
 	@ResponseSchema(RunnerIdsNotMatchingError, { statusCode: 406 })
-	@OpenAPI({ description: "Update the runner whose id you provided. <br> Please remember that id's can't be changed." })
+	@OpenAPI({ description: "Update the runner whose id you provided. <br> Please remember that ids can't be changed." })
 	async put(@Param('id') id: number, @Body({ validate: true }) runner: UpdateRunner) {
 		let oldRunner = await this.runnerRepository.findOne({ id: id }, { relations: ['group'] });