Update lead_source.json (#22872)

Allow Lead Source to be renamed. This is usefull for cleaning up data at a later point and allow correcting spelling errors.

Co-authored-by: Rucha Mahabal <ruchamahabal2@gmail.com>

erpnext/selling/doctype/lead_source/lead_source.json

@@ -1,7 +1,7 @@
 {
  "allow_copy": 0, 
  "allow_import": 0, 
- "allow_rename": 0, 
+ "allow_rename": 1, 
  "autoname": "field:source_name", 
  "beta": 0, 
  "creation": "2016-09-16 01:47:47.382372", 
@@ -74,7 +74,7 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2016-09-16 02:03:01.441622", 
+ "modified": "2020-09-16 02:03:01.441622", 
  "modified_by": "Administrator", 
  "module": "Selling", 
  "name": "Lead Source", 
@@ -128,4 +128,4 @@
  "sort_field": "modified", 
  "sort_order": "DESC", 
  "track_seen": 0
-}
+}