Update links for Jira integration

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

doc/integration/external-issue-tracker.md

@@ -31,7 +31,7 @@ Visit the links below for details:
 - [Bugzilla](../user/project/integrations/bugzilla.md)
 - [Custom Issue Tracker](../user/project/integrations/custom_issue_tracker.md)
 - [Engineering Workflow Management](../user/project/integrations/ewm.md)
-- [Jira](../user/project/integrations/jira.md)
+- [Jira](../integration/jira/index.md)
 - [Redmine](../user/project/integrations/redmine.md)
 - [YouTrack](../user/project/integrations/youtrack.md)
 

doc/integration/jira/development_panel.md

@@ -31,7 +31,7 @@ This integration connects all GitLab projects to projects in the Jira instance i
   including the projects in its subgroups.
 - A personal namespace: Connects the projects in that personal namespace to Jira.
 
-This differs from the [Jira integration](../../user/project/integrations/jira.md),
+This differs from the [Jira integration](index.md),
 where the mapping is between one GitLab project and the entire Jira instance.
 You can install both integrations to take advantage of both sets of features.
 A [feature comparison](index.md#direct-feature-comparison) is available.

doc/integration/jira/dvcs.md

@@ -135,7 +135,7 @@ Problems with SSL and TLS can cause this error message:
 Error obtaining access token. Cannot access https://gitlab.example.com from Jira.
 ```
 
-- The [GitLab Jira integration](../../user/project/integrations/jira.md) requires
+- The [GitLab Jira integration](index.md) requires
   GitLab to connect to Jira. Any TLS issues that arise from a private certificate
   authority or self-signed certificate are resolved
   [on the GitLab server](https://docs.gitlab.com/omnibus/settings/ssl.html#other-certificate-authorities),

doc/integration/jira/jira_cloud_configuration.md

@@ -6,7 +6,7 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # Create an API token in Jira on Atlassian cloud **(FREE)**
 
-You need an API token to [integrate with Jira](../../user/project/integrations/jira.md)
+You need an API token to [integrate with Jira](index.md)
 on Atlassian cloud. To create the API token:
 
 1. Sign in to [`id.atlassian.com`](https://id.atlassian.com/manage-profile/security/api-tokens)

doc/integration/jira/jira_server_configuration.md

@@ -6,7 +6,7 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # Jira Server credentials **(FREE)**
 
-To [integrate Jira with GitLab](../../user/project/integrations/jira.md), you must
+To [integrate Jira with GitLab](index.md), you must
 create a Jira user account for your Jira projects to access projects in GitLab.
 This Jira user account must have write access to your Jira projects. To create the
 credentials, you must:

doc/university/index.md

@@ -195,7 +195,7 @@ The GitLab University curriculum is composed of GitLab videos, screencasts, pres
 <!-- vale gitlab.Spelling = NO -->
 
 1. [How to Integrate Jira and Jenkins with GitLab - Video](https://gitlabmeetings.webex.com/gitlabmeetings/ldr.php?RCID=44b548147a67ab4d8a62274047146415)
-1. [How to Integrate Jira with GitLab](../user/project/integrations/jira.md)
+1. [How to Integrate Jira with GitLab](../integration/jira/index.md)
 1. [How to Integrate Jenkins with GitLab](../integration/jenkins.md)
 1. [How to Integrate Bamboo with GitLab](../user/project/integrations/bamboo.md)
 1. [How to Integrate Slack with GitLab](../user/project/integrations/slack.md)