website(docs): fix typo (#1325)

Author: luhagel

website/content/020-guides/110-configuration-management.mdx

@@ -21,7 +21,7 @@ Nexus takes a centralized approach to settings. All components in Nexus have the
 ```ts
 import { settings } from 'nexus'
 
-sttings.change({
+settings.change({
   server: {
     playground: false,
   },