Refactor function name and update references

Renamed find_field_with_sort_order to parse_sorted_field.

--HG-- branch : 16.0

models/redner_substitution.py

@@ -24,7 +24,7 @@ from odoo.exceptions import ValidationError
 from odoo.addons import converter
 
 from ..converter import ImageDataURL, ImageFile
-from ..utils.sorting import find_field_with_sort_order, sortkey
+from ..utils.sorting import parse_sorted_field, sortkey
 
 
 class Substitution(models.Model):
@@ -102,7 +102,7 @@ class Substitution(models.Model):
             elif sub.converter == "relation-to-many":
                 # Unpack the result of finding a field with its sort order into
                 # variable names.
-                value, sorted = find_field_with_sort_order(sub.value)
+                value, sorted = parse_sorted_field(sub.value)
                 conv = converter.RelationToMany(
                     value,
                     None,