docs: fix realm typo

docs/modules/ROOT/pages/servlet/authentication/passwords/digest.adoc

@@ -47,7 +47,7 @@ UserDetailsService userDetailsService;
 
 DigestAuthenticationEntryPoint entryPoint() {
 	DigestAuthenticationEntryPoint result = new DigestAuthenticationEntryPoint();
-	result.setRealmName("My App Relam");
+	result.setRealmName("My App Realm");
 	result.setKey("3028472b-da34-4501-bfd8-a355c42bdf92");
 }