[IMP] account: clarify help message

Was too technical

addons/account/i18n/account.pot

@@ -9184,6 +9184,11 @@ msgstr ""
 msgid "The sequence of journal %s is deactivated."
 msgstr ""
 
+#. module: account
+#: model:ir.model.fields,help:account.field_account_cash_rounding_rounding_method
+msgid "The tie-breaking rule used for float rounding operations"
+msgstr ""
+
 #. module: account
 #: model:ir.ui.view,arch_db:account.portal_my_invoices
 msgid "There are currently no invoices and payments for your account."
@@ -9241,11 +9246,6 @@ msgstr ""
 msgid "These users handle billing specifically."
 msgstr ""
 
-#. module: account
-#: model:ir.model.fields,help:account.field_account_cash_rounding_rounding_method
-msgid "These values must correspond to the rounding_method of the float_round tools method."
-msgstr ""
-
 #. module: account
 #: code:addons/account/models/account_invoice.py:1356
 #, python-format

addons/account/models/account_cash_rounding.py

@@ -23,7 +23,7 @@ class AccountCashRounding(models.Model):
     account_id = fields.Many2one('account.account', string='Account')
     rounding_method = fields.Selection(string='Rounding Method', required=True,
         selection=[('UP', 'UP'), ('DOWN', 'DOWN'), ('HALF-UP', 'HALF-UP')],
-        default='HALF-UP', help='These values must correspond to the rounding_method of the float_round tools method.')
+        default='HALF-UP', help='The tie-breaking rule used for float rounding operations')
 
     @api.multi
     def round(self, amount):