Fix broken link

Signed-off-by: Julien Pivotto <[email protected]>

Author: Julien Pivotto

website/docs/r/project_membership.html.markdown

@@ -1,7 +1,7 @@
 ---
 layout: "gitlab"
 page_title: "GitLab: gitlab_project_membership"
-sidebar_current: "docs-gitlab-resource-project-membership"
+sidebar_current: "docs-gitlab-resource-project_membership"
 description: |-
   Adds a user to a project as a member
 ---

website/gitlab.erb

@@ -40,8 +40,8 @@
           <li<%= sidebar_current("docs-gitlab-resource-project-x") %>>
             <a href="/docs/providers/gitlab/r/project.html">gitlab_project</a>
           </li>
-          <li<%= sidebar_current("docs-gitlab-resource-project-membership") %>>
-              <a href="/docs/providers/gitlab/r/project-membership.html">gitlab_project_membership</a>
+          <li<%= sidebar_current("docs-gitlab-resource-project_membership") %>>
+              <a href="/docs/providers/gitlab/r/project_membership.html">gitlab_project_membership</a>
           </li>
           <li<%= sidebar_current("docs-gitlab-resource-user") %>>
             <a href="/docs/providers/gitlab/r/user.html">gitlab_user</a>