fix(call log): Convert `Data` to `Link` for type_of_call

Convert `Data` to `Link` for type_of_call,
employee_user_id and call_received_by fields
diff --git a/erpnext/telephony/doctype/call_log/call_log.json b/erpnext/telephony/doctype/call_log/call_log.json
index cd749e8..c0d416c 100644
--- a/erpnext/telephony/doctype/call_log/call_log.json
+++ b/erpnext/telephony/doctype/call_log/call_log.json
@@ -141,27 +141,30 @@
   },
   {
    "fieldname": "employee_user_id",
-   "fieldtype": "Data",
+   "fieldtype": "Link",
    "hidden": 1,
-   "label": "Employee User Id"
+   "label": "Employee User Id",
+   "options": "Employee"
   },
   {
    "fieldname": "type_of_call",
-   "fieldtype": "Data",
-   "label": "Type Of Call"
+   "fieldtype": "Link",
+   "label": "Type Of Call",
+   "options": "Telephony Call Type"
   },
   {
    "depends_on": "to",
    "fieldname": "call_received_by",
-   "fieldtype": "Data",
+   "fieldtype": "Link",
    "label": "Call Received By",
+   "options": "User",
    "read_only": 1
   }
  ],
  "in_create": 1,
  "index_web_pages_for_search": 1,
  "links": [],
- "modified": "2022-02-25 14:37:48.575230",
+ "modified": "2022-04-14 00:18:31.148428",
  "modified_by": "Administrator",
  "module": "Telephony",
  "name": "Call Log",