[FIX] *: first small clean of the code

Friday afternoon cleanup. This is required so we can use "make test", as
there are currently hundreds of errors. For now, it is unusable because
of the oldest code in this repo.

closes odoo/documentation#3538

Signed-off-by: Castillo Jonathan (jcs) <jcs@odoo.com>

content/applications/finance/accounting/payables/supplier_bills/deferred_expenses.rst

@@ -48,7 +48,7 @@ Post an expense to the right account
 ------------------------------------
 
 Select the account on a draft bill
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 On a draft bill, select the right account for all the products of which the expenses must be
 deferred.
@@ -72,7 +72,7 @@ save.
    `Automate the Deferred Expenses`_).
 
 Change the account of a posted journal item
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 To do so, open your Purchases Journal by going to :menuselection:`Accounting --> Accounting -->
 Purchases`, select the journal item you want to modify, click on the account, and select the right