make quotation against lead company name (#9188)

diff --git a/erpnext/crm/doctype/lead/lead.py b/erpnext/crm/doctype/lead/lead.py
index ccbb536..f38d386 100644
--- a/erpnext/crm/doctype/lead/lead.py
+++ b/erpnext/crm/doctype/lead/lead.py
@@ -150,8 +150,7 @@
 		{"Lead": {
 			"doctype": "Quotation",
 			"field_map": {
-				"name": "lead",
-				"lead_name": "customer_name",
+				"name": "lead"
 			}
 		}}, target_doc)
 	target_doc.quotation_to = "Lead"