[IMP] modules: document the new cli option

We can now run some scripts after major upgrade before loading base.

closes #233

Signed-off-by: Christophe Simonis (chs) <[email protected]>

Author: aj-fuentes

src/util/modules.py

@@ -5,7 +5,9 @@
 In most cases module operations (rename, merge, remove, ...) should be performed in a
 `base` script. The reason is that once the `base` module is upgraded, all the information
 regarding modules should be already set in the DB for the upgrade process to function
-correctly.
+correctly. The command line option `--pre-upgrade-scripts` (available from Odoo 16) allows
+to run upgrade scripts *before* loading base. This is the recommended way to perform
+module operations after a major upgrade.
 """
 
 try: