Merge pull request #4751 from agusputra/patch-11

Update calendar.md
diff --git a/erpnext/docs/user/manual/en/using-erpnext/calendar.md b/erpnext/docs/user/manual/en/using-erpnext/calendar.md
index de564be..1ad325b 100644
--- a/erpnext/docs/user/manual/en/using-erpnext/calendar.md
+++ b/erpnext/docs/user/manual/en/using-erpnext/calendar.md
@@ -17,7 +17,7 @@
 
 ####Event Based on Lead
 
-In the Lead form, you will find a field called Next Contact By and Next Contact Date. Event will be auto created for date and person person specified in this field.
+In the Lead form, you will find a field called Next Contact By and Next Contact Date. Event will be auto created for date and person specified in this field.
 
 ![Calender Event Lead]({{docs_base_url}}/assets/old_images/erpnext/calender-event-lead.png)
 
@@ -46,7 +46,7 @@
 
 ####Enable Reminder in Event
 
-In the Event master, checking "Send an email reminder in the morning" will trigger notifcation email to all the participants for this event.
+In the Event master, checking "Send an email reminder in the morning" will trigger notification email to all the participants for this event.
 
 ![Calender Event Notification]({{docs_base_url}}/assets/old_images/erpnext/calender-event-notification.png)