Update docs on Mattermost and Slack notifications channels

doc/user/project/integrations/mattermost.md

@@ -24,23 +24,24 @@ There, you will see a checkbox with the following events that can be triggered:
 
 - Push
 - Issue
+- Confidential issue
 - Merge request
 - Note
 - Tag push
 - Build
+- Pipeline
 - Wiki page
 
-Bellow each of these event checkboxes, you will have an input field to insert
-which Mattermost channel you want to send that event message, with `#town-square`
-being the default. The hash sign is optional.
+Below each of these event checkboxes, you have an input field to enter
+which Mattermost channel you want to send that event message. Enter your preferred channel handle (the hash sign `#` is optional).
 
 At the end, fill in your Mattermost details:
 
 | Field | Description |
 | ----- | ----------- |
-| **Webhook**  | The incoming webhooks which you have to setup on Mattermost, it will be something like: http://mattermost.example/hooks/5xo... |
+| **Webhook**  | The incoming webhook URL which you have to setup on Mattermost, it will be something like: http://mattermost.example/hooks/5xo… |
 | **Username** | Optional username which can be on messages sent to Mattermost. Fill this in if you want to change the username of the bot. |
 | **Notify only broken builds** | If you choose to enable the **Build** event and you want to be only notified about failed builds. |
-
+| **Notify only broken pipelines** | If you choose to enable the **Pipeline** event and you want to be only notified about failed pipelines. |
 
 ![Mattermost configuration](img/mattermost_configuration.png)

doc/user/project/integrations/slack.md

@@ -21,23 +21,25 @@ There, you will see a checkbox with the following events that can be triggered:
 
 - Push
 - Issue
+- Confidential issue
 - Merge request
 - Note
 - Tag push
 - Build
+- Pipeline
 - Wiki page
 
-Bellow each of these event checkboxes, you will have an input field to insert
-which Slack channel you want to send that event message, with `#general`
-being the default. Enter your preferred channel **without** the hash sign (`#`).
+Below each of these event checkboxes, you have an input field to enter
+which Slack channel you want to send that event message. Enter your preferred channel name **without** the hash sign (`#`).
 
 At the end, fill in your Slack details:
 
 | Field | Description |
 | ----- | ----------- |
 | **Webhook**  | The [incoming webhook URL][slackhook] which you have to setup on Slack. |
-| **Username** | Optional username which can be on messages sent to slack. Fill this in if you want to change the username of the bot. |
+| **Username** | Optional username which can be on messages sent to Slack. Fill this in if you want to change the username of the bot. |
 | **Notify only broken builds** | If you choose to enable the **Build** event and you want to be only notified about failed builds. |
+| **Notify only broken pipelines** | If you choose to enable the **Pipeline** event and you want to be only notified about failed pipelines. |
 
 After you are all done, click **Save changes** for the changes to take effect.