docs(openapi): update

Tony133 · Tony133 · commit d94446a9c82d · 2021-07-28T19:41:13.000+02:00
diff --git a/content/openapi/introduction.md b/content/openapi/introduction.md
@@ -137,7 +137,7 @@ const document = SwaggerModule.createDocument(app, config, options);
 
 #### Setup options
 
-You can configure Swagger UI by passing the options object which fulfills the `ExpressSwaggerCustomOptions` interface as a fourth argument of the `SwaggerModule#setup` method, if you use express
+You can configure Swagger UI by passing the options object which fulfills the `ExpressSwaggerCustomOptions` interface as a fourth argument of the `SwaggerModule#setup` method, if you use express.
 
 ```TypeScript
 export interface ExpressSwaggerCustomOptions {
