Fixed #30400 -- Improved typography of user facing strings.

Thanks Claude Paroz for assistance with translations.

django/forms/models.py

@@ -1272,7 +1272,7 @@ class ModelMultipleChoiceField(ModelChoiceField):
         'list': _('Enter a list of values.'),
         'invalid_choice': _('Select a valid choice. %(value)s is not one of the'
                             ' available choices.'),
-        'invalid_pk_value': _('"%(pk)s" is not a valid value.')
+        'invalid_pk_value': _('“%(pk)s” is not a valid value.')
     }
 
     def __init__(self, queryset, **kwargs):

django/forms/utils.py

@@ -159,7 +159,7 @@ def from_current_timezone(value):
             return timezone.make_aware(value, current_timezone)
         except Exception as exc:
             raise ValidationError(
-                _('%(datetime)s couldn\'t be interpreted '
+                _('%(datetime)s couldn’t be interpreted '
                   'in time zone %(current_timezone)s; it '
                   'may be ambiguous or it may not exist.'),
                 code='ambiguous_timezone',