Typo: retuning should be returning

It ain't much but its honest work

www/docs/getting-started/rest-api.md

@@ -17,7 +17,7 @@ The POST submission requires CSRF token from `/api/auth/csrf`.
 
 #### GET /api/auth/callback/:provider
 
-Handles retuning requests from OAuth services during sign in.
+Handles returning requests from OAuth services during sign in.
 
 For OAuth 2.0 providers that support the `state` option, the value of the `state` parameter is checked against the one that was generated when the sign in flow was started - this uses a hash of the CSRF token which MUST match for both the POST and GET calls during sign in.
 
@@ -59,4 +59,4 @@ e.g.
  `NEXTAUTH_URL=https://example.com/myapp/api/authentication`
 
 `/api/auth/signin` -> `/myapp/api/authentication/signin`
-:::
+:::