chore: correct important typo (#54)

jamesbhobbs · web-flow · commit 91e252d75fe3 · 2021-12-07T10:05:20.000Z
diff --git a/README.md b/README.md
@@ -79,7 +79,7 @@ You can define the default reviewers who will be assigned when no reviewers are
 
 ```yaml
 reviewers:
-  default:
+  defaults:
     - repository-owners
 ```
 
