Fix missing index

htdocs/install/mysql/migration/8.0.0-9.0.0.sql

@@ -30,6 +30,7 @@
 
 -- Missing in 8.0
 ALTER TABLE llx_contrat_extrafields ADD INDEX idx_contrat_extrafields (fk_object);
+ALTER TABLE llx_facture_rec_extrafields ADD INDEX idx_facture_rec_extrafields (fk_object);
 
 ALTER TABLE llx_accounting_account DROP FOREIGN KEY fk_accounting_account_fk_pcg_version;
 ALTER TABLE llx_accounting_account MODIFY COLUMN fk_pcg_version varchar(32) NOT NULL;