Fix tar.bz2 snapshot example

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index 7887b02..ab9ab66 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -288,8 +288,8 @@
 root-readme=/var/www/htdocs/about.html
 
 
-# Allow download of tar.gz, tar.bz and zip-files
-snapshots=tar.gz tar.bz zip
+# Allow download of tar.gz, tar.bz2 and zip-files
+snapshots=tar.gz tar.bz2 zip
 
 
 ##