[IMP]Update photos on language doc

[colu-odoo]

Update outdated pictures as well as update some phrasing and grammar.

[robodoo]

Pull request status dashboard.

[auva-odoo]

Hi @colu-odoo, thank you for your contribution! I'm going to close this PR because we're currently working on a more comprehensive rework of this doc page. We'll definitely take your work into account to improve the page. Thanks again!