Add more doc

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/auth/registration/RegistrationWizard.kt

@@ -19,7 +19,13 @@ package org.matrix.android.sdk.api.auth.registration
 /**
  * Set of methods to be able to create an account on a homeserver.
  *
+ * Common scenario to register an account successfully:
+ *  - Call [getRegistrationFlow] to check that you application supports all the mandatory registration stages
+ *  - Call [createAccount] to start the account creation
+ *  - Fulfill all mandatory stages using the methods [performReCaptcha] [acceptTerms] [dummy], etc.
+ *
  * More documentation can be found in the file https://github.com/vector-im/element-android/blob/main/docs/signup.md
+ * and https://matrix.org/docs/spec/client_server/latest#account-registration-and-management
  */
 interface RegistrationWizard {
     /**