[update] event_text article

Modernize template example and clean text template details

Author: mlakatkou

docs/api/template/event_text.md

@@ -14,20 +14,19 @@ description: "specifies the event's text"
 
 ### Parameters
 
-- `start` - (required) *Date* - the date when an event is scheduled to begin   
+- `start` - (required) *Date* - the date when an event is scheduled to begin
 - `end` - (required) *Date* - the date when an event is scheduled to be completed
 - `event` - (required) *object* - the event object
 
 ### Returns
-- ` text` - (string) - html text for rendering in the scheduler
+- `text` - (string) - HTML text for rendering in the Scheduler
 
 ### Example
 
 ~~~jsx
-scheduler.templates.event_text=function(start, end, event){
-    return "<a href='http://some.com/details.php?for="+event.id+"'>"
-    +event.text+"</a>";
-}
+scheduler.templates.event_text = (start, end, event) => {
+    return `<a href='http://some.com/details.php?for=${event.id}'>${event.text}</a>`;
+};
 ~~~
 
 **Applicable views:** [Day view](views/day.md), [Week view](views/week.md), [Units view](views/units.md)
@@ -37,7 +36,7 @@ scheduler.templates.event_text=function(start, end, event){
 
 ### Details
 
-Note that for Month and Timeline Views you need to use the [event_bar_text](api/template/event_bar_text.md) template to specify the event's text.
+Note that for Month and Timeline views you need to use the [`event_bar_text`](api/template/event_bar_text.md) template to specify the event's text.
 
 ### Related Guides
 - [Day View Templates](views/day-view-templates.md)