Fix Launchpad link in release note

Author: priteau

releasenotes/notes/bump-glance-to-fix-bug-2086675-303542d3208103b9.yaml

@@ -1,5 +1,5 @@
 ---
 fixes:
   - |
-    Fix `bug 2086675: <https://bugs.launchpad.net/glance/+bug/2086675>__`
+    Fix `bug 2086675: <https://bugs.launchpad.net/glance/+bug/2086675>`__
     Performance regression for Glance with RBD backend.