Fix broken formatting in 2.8 release notes

Change-Id: Ic3c001dea5295f683088088ea27b4d44988f3bbc
diff --git a/ReleaseNotes/ReleaseNotes-2.8.txt b/ReleaseNotes/ReleaseNotes-2.8.txt
index eadc472..5e11883 100644
--- a/ReleaseNotes/ReleaseNotes-2.8.txt
+++ b/ReleaseNotes/ReleaseNotes-2.8.txt
@@ -90,7 +90,7 @@
 
 *WARNING:* After enabling the secondary index, the index must be built using the
 link:https://gerrit-documentation.storage.googleapis.com/Documentation/2.8/pgm-reindex.html[
-reindex program before restarting the Gerrit server.
+reindex program] before restarting the Gerrit server.
 
 
 Configuration