Update introduction.md

kamilmysliwiec · web-flow · commit fa0cbfe9492c · 2021-01-13T11:53:26.000+01:00
diff --git a/content/openapi/introduction.md b/content/openapi/introduction.md
@@ -86,7 +86,7 @@ The `SwaggerModule` automatically reflects all of your endpoints. Note that the
 > });
 > ```
 
-### Document options
+#### Document options
 
 When creating a document, it is possible to provide some extra options to fine tune the library's behavior. These options should be of type `SwaggerDocumentOptions`, which can be the following:
 
