update two mentions of error codes

Author: renetapopova

modules/ROOT/pages/authentication-authorization/database-administration.adoc

@@ -180,7 +180,7 @@ Use `REVOKE` if you want to remove a privilege.
 
 Common errors, such as misspellings or attempts to revoke privileges that have not been granted or denied, will lead to notifications.
 Some of these notifications may be replaced with errors in a future major version of Neo4j.
-See link:{neo4j-docs-base-uri}/status-codes/{page-version}/notifications/all-notifications[Status Codes -> Notification codes] for details on notifications.
+See link:{neo4j-docs-base-uri}/status-codes/{page-version}/notifications/all-notifications[Status Codes for Errors & Notifications -> Server notifications] for details on notifications.
 
 The hierarchy between the different database privileges is shown in the image below.
 

modules/ROOT/pages/database-administration/aliases/manage-aliases-composite-databases.adoc

@@ -118,6 +118,8 @@ CREATE ALIAS yard FOR DATABASE garden
 [source, output, role="noheader"]
 ----
 Failed to create the specified database alias 'yard': Database 'garden' is composite.
+
+GQLSTATUS 42NA6, error: syntax error or access rule violation - invalid alias target. Aliases are not allowed to target composite databases.
 ----
 
 == Alter local and remote database aliases in composite databases
@@ -353,6 +355,7 @@ DROP ALIAS $aliasname FOR DATABASE
 ----
 Failed to delete the specified database alias 'foo.bar': Database alias does not exist.
 ----
+//GQLSTATUS 50N00, error: general processing exception - internal error. Internal exception raised { $msgTitle }: Failed to create the specified database alias 'foo.bar'. Database alias does not exist.
 
 Had the composite database `foo` not existed, the database alias `foo.bar` would have been dropped.