Fix link to bitbucket import documentation

Signed-off-by: Martin Bastien <martin.bastien@studiofrenetic.com>

app/views/projects/_bitbucket_import_modal.html.haml

@@ -10,4 +10,4 @@
           you need to
         - else
           your GitLab administrator needs to
-        == #{link_to 'setup OAuth integration', 'https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/integration/butbucket.md'}.
\ No newline at end of file
+        == #{link_to 'setup OAuth integration', 'https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/integration/bitbucket.md'}.