make lint config more strict

.redocly.yaml

@@ -13,17 +13,17 @@ lint:
     path-declarations-must-exist: on
 
     camel-case-names: off
-    api-servers: off
-    license-url: off
-    no-extra-fields: off
-    operation-description: off
+    api-servers: on
+    license-url: on
+    no-extra-fields: on
+    operation-description: on
     operation-operationId: on
     operation-tags: off
-    provide-contact: off
-    servers-no-trailing-slash: off
+    provide-contact: on
+    servers-no-trailing-slash: on
 
-    bundler: off
-    debug-info: off
+    bundler: on
+    debug-info: on
 referenceDocs:
   htmlTemplate: ./docs/index.html
   theme: