[FIX]website_partner:partner description is now translatable

Steps to reproduce:
-install website, website_partner, contacts and studio
-go to contacts and open any partner
-click the studio icon (top-right corner of the screen)
-add the 'website_description' field to the partner

Previous behavior:
the description field is not translatable and attempting to
change the "translatable" option in technical > fields spawns
an error

Current behavior:
the description field is translatable

opw-2155115

closes odoo/odoo#41990

Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>

addons/website_partner/models/res_partner.py

@@ -2,13 +2,14 @@
 
 from odoo import api, fields, models
 from odoo.addons.http_routing.models.ir_http import slug
+from odoo.tools.translate import html_translate
 
 
 class WebsiteResPartner(models.Model):
     _name = 'res.partner'
     _inherit = ['res.partner', 'website.seo.metadata', 'website.published.mixin']
 
-    website_description = fields.Html('Website Partner Full Description', strip_style=True)
+    website_description = fields.Html('Website Partner Full Description', strip_style=True, translate=html_translate)
     website_short_description = fields.Text('Website Partner Short Description')
 
     @api.multi