Note a bug number for 6888

changes/bug6866

@@ -5,4 +5,5 @@
     - Disable the use of Guard nodes when in Tor2WebMode. Guard usage
       by Tor2Web clients allows hidden services to identity tor2web
       clients through their repeated selection of the same rendezvous
-      and introduction point circuit endpoints (their guards).
+      and introduction point circuit endpoints (their guards). Fixes
+      bug 6888.