fix: correct documentation of script parameter in postgresql/restore

Author: BacLuc

docs/modules/ROOT/pages/vshn-managed/postgresql/restore.adoc

@@ -111,7 +111,7 @@ Where:
 
 * `SECRET_NAME_FROM`: The secret name of the temporary instance containing the restored backup
 * `SECRET_NAME_TO`: The secret name of the target instance where you want to restore the database
-* `NAMESPACE`: The claim namespace where both instances are provisioned
+* `NAMESPACE`: The namespace where both secrets are
 
 [source,bash]
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