Fix broken links to docs

[ci skip]

3 files changed, 10 insertions, 11 deletions

diff --git a/doc/user/project/integrations/kubernetes.md b/doc/user/project/integrations/kubernetes.md
index 99aa9e44bdb..7b33327f6cf 100644
--- a/doc/user/project/integrations/kubernetes.md
+++ b/doc/user/project/integrations/kubernetes.md
@@ -40,7 +40,7 @@ the `ca.crt` contents as the `Custom CA bundle`.
 ## Deployment variables
 
 The Kubernetes service exposes following
-[deployment variables](../ci/variables/README.md#deployment-variables) in the
+[deployment variables](../../../ci/variables/README.md#deployment-variables) in the
 GitLab CI build environment:
 
 - `KUBE_URL` - equal to the API URL
@@ -55,7 +55,7 @@ Added in GitLab 8.15. You must be the project owner or have `master` permissions
 to use terminals. Support is currently limited to the first container in the
 first pod of your environment.
 
-When enabled, the Kubernetes service adds [web terminal](../ci/environments.md#web-terminals)
+When enabled, the Kubernetes service adds [web terminal](../../../ci/environments.md#web-terminals)
 support to your environments. This is based on the `exec` functionality found in
 Docker and Kubernetes, so you get a new shell session within your existing
 containers. To use this integration, you should deploy to Kubernetes using
diff --git a/doc/user/project/integrations/mattermost_slash_commands.md b/doc/user/project/integrations/mattermost_slash_commands.md
index 67cb88104c1..9a09e6d37ea 100644
--- a/doc/user/project/integrations/mattermost_slash_commands.md
+++ b/doc/user/project/integrations/mattermost_slash_commands.md
@@ -17,7 +17,7 @@ in it. All you have to do is configure it. Read more in the
 ## Automated Configuration
 
 If Mattermost is installed on the same server as GitLab, the configuration process can be
-done for you by GitLab. 
+done for you by GitLab.
 
 Go to the Mattermost Slash Command service on your project and click the 'Add to Mattermost' button.
 
@@ -29,7 +29,7 @@ commands in Mattermost and then enable the service in GitLab.
 ### Step 1. Enable custom slash commands in Mattermost
 
 This step is only required when using a source install, omnibus installs will be
-preconfigured with the right settings. 
+preconfigured with the right settings.
 
 The first thing to do in Mattermost is to enable custom slash commands from
 the administrator console.
@@ -41,8 +41,8 @@ the administrator console.
 
     ---
 
-1. Click **Custom integrations** and set **Enable Custom Slash Commands**, 
-   **Enable custom integrations to override usernames**, and **Override 
+1. Click **Custom integrations** and set **Enable Custom Slash Commands**,
+   **Enable custom integrations to override usernames**, and **Override
    custom integrations to override profile picture icons** to true
 
     ![Mattermost console](img/mattermost_console_integrations.png)
@@ -149,15 +149,14 @@ trigger word followed by <kbd>help</kbd>. Example: <samp>/gitlab help</samp>
 
 ## Permissions
 
-The permissions to run the [available commands](#available-commands) derive from
-the [permissions you have on the project](../user/permissions.md#project).
+The permissions to run the [available commands](#available-slash-commands) derive from
+the [permissions you have on the project](../../permissions.md#project).
 
 ## Further reading
 
 - [Mattermost slash commands documentation][mmslashdocs]
 - [Omnibus GitLab Mattermost][omnimmdocs]
 
-
 [omnimmdocs]: https://docs.gitlab.com/omnibus/gitlab-mattermost/
 [mmslashdocs]: https://docs.mattermost.com/developer/slash-commands.html
-[ciyaml]: ../ci/yaml/README.md
+[ciyaml]: ../../../ci/yaml/README.md
diff --git a/doc/user/project/integrations/slack_slash_commands.md b/doc/user/project/integrations/slack_slash_commands.md
index d9ff573d185..6efc2a168fa 100644
--- a/doc/user/project/integrations/slack_slash_commands.md
+++ b/doc/user/project/integrations/slack_slash_commands.md
@@ -6,7 +6,7 @@ Slack commands give users an extra interface to perform common operations
 from the chat environment. This allows one to, for example, create an issue as
 soon as the idea was discussed in chat.
 For all available commands try the help subcommand, for example: `/gitlab help`, 
-all review the [full list of commands](../integration/chat_commands.md).
+all review the [full list of commands](../../../integration/chat_commands.md).
 
 ## Prerequisites