Fix typo

Closes spring-atticgh-827

Author: Daniel

spring-security-oauth2/src/main/java/org/springframework/security/oauth2/config/annotation/web/configuration/AuthorizationServerEndpointsConfiguration.java

@@ -82,7 +82,7 @@ public void init() {
 try {
 configurer.configure(endpoints);
 } catch (Exception e) {
-throw new IllegalStateException("Cannot configure enpdoints", e);
+throw new IllegalStateException("Cannot configure endpoints", e);
 }
 }
 endpoints.setClientDetailsService(clientDetailsService);