[IMP] l10n_ro: improve translations for account chart of Romania

Description of the issue/feature this PR addresses:
Some Romanian translations in the chart of accounts contained typos or imprecise terminology. These inaccuracies could lead to confusion for users relying on the Romanian localization.

Current behavior before PR:
Several account descriptions in Romanian included spelling errors or used vague or non-standard accounting terms.

Desired behavior after PR is merged:
Account descriptions in Romanian are now corrected, clearer, and better aligned with official terminology, improving usability and compliance with Romanian accounting norms.
The updated translations are based on the official ANAF reference:
[SAF-T RO Schema Definition Codes v4.1.6](https://static.anaf.ro/static/10/Anaf/Informatii_R/SAF_T_Ro_SchemaDefinitionCodes_v4_1_6_final_1712021.xlsx)

closes odoo#212477

closes odoo#216828

X-original-commit: a17d20a
Signed-off-by: Wala Gauthier (gawa) <[email protected]>

Author: dhongu