Merge pull request #2836 from Tony133/docs/improvements-description-cron-decorator

docs(task-scheduling): improvements description cron decorator

Author: kamilmysliwiec

content/techniques/task-scheduling.md

@@ -53,7 +53,7 @@ export class TasksService {
 
 In this example, the `handleCron()` method will be called each time the current second is `45`. In other words, the method will be run once per minute, at the 45 second mark.
 
-The `@Cron()` decorator supports all standard [cron patterns](http://crontab.org/):
+The `@Cron()` decorator supports the following standard [cron patterns](http://crontab.org/):
 
 - Asterisk (e.g. `*`)
 - Ranges (e.g. `1-3,5`)