Update rest_api.md (#4720)
* Update rest_api.md
Fix a small typo
* Update docs/rest_api.md
slight edit
Co-Authored-By: rodric rabbah <rodric@gmail.com>
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### Triggers with Feed Actions
-There are special triggers that can be created using a feed action. The feed action it's an action that helps with the configuration of a feed provider that will be in charge of firing the trigger whenever there is an event for the trigger. Learn more about these feed providers in the [feeds.md] documentation.
+There are special triggers that can be created using a feed action. The feed action configures a feed provider such that events from the provider results in triggers being fired. Learn more about these feed providers in the [feeds.md] documentation.
Some of the available triggers that leverage a feed action are periodic/alarms, Slack, Github, Cloudant/Couchdb, and messageHub/Kafka. You also can create your own feed action and feed provider.
