Update erpnext/public/js/sms_manager.js

Co-Authored-By: Deepesh Garg <42651287+deepeshgarg007@users.noreply.github.com>
diff --git a/erpnext/public/js/sms_manager.js b/erpnext/public/js/sms_manager.js
index a7003a2..a058da2 100644
--- a/erpnext/public/js/sms_manager.js
+++ b/erpnext/public/js/sms_manager.js
@@ -22,7 +22,7 @@
 
 		if (in_list(['Sales Order', 'Delivery Note', 'Sales Invoice'], doc.doctype))
 			this.show(doc.contact_person, 'Customer', doc.customer, '', default_msg[doc.doctype]);
-		else if (in_list(['Quotation'], doc.doctype))
+		else if (doc.doctype === 'Quotation')
 			this.show(doc.contact_person, 'Customer', doc.party_name, '', default_msg[doc.doctype]);
 		else if (in_list(['Purchase Order', 'Purchase Receipt'], doc.doctype))
 			this.show(doc.contact_person, 'Supplier', doc.supplier, '', default_msg[doc.doctype]);