fix: Updated firebase-admin.adoc to correct typo in property name

docs/modules/ROOT/pages/firebase-admin.adoc

@@ -73,7 +73,7 @@ public class FirebaseAuthResourceTest {
 This extension also supports Firebase Authentication, allowing you to secure your endpoints using Firebase's authentication mechanisms.
 This section describes how to use Firebase Authentication in your Quarkus application.
 
-Remember that you need to enable the Firebase Authentication service in your Firebase project. `quarkus.google.cloud.firebase.auth.enable` must be set to `true` in your application configuration.
+Remember that you need to enable the Firebase Authentication service in your Firebase project. `quarkus.google.cloud.firebase.auth.enabled` must be set to `true` in your application configuration.
 
 === Configuration
 
@@ -122,4 +122,4 @@ public class FirebaseAppResource {
 
 == Configuration Reference
 
-include::./includes/quarkus-google-cloud-firebase-admin.adoc[]
+include::./includes/quarkus-google-cloud-firebase-admin.adoc[]