Modify htaccess

Fix /tg and /telegram redirect path to "...gram" (non-solidus)
to support /tg/en (English page)

.htaccess

@@ -10,5 +10,5 @@ Redirect permanent /firefox-new /firefox
 Redirect permanent /firefox/release /firefox/releases
 Redirect permanent /events/sfd2012 /events/code-rush
 Redirect permanent /events/fxu12rp /events/furp
-Redirect permanent /telegram /community/telegram/
-Redirect permanent /tg /community/telegram/
+Redirect permanent /telegram /community/telegram
+Redirect permanent /tg /community/telegram