minor #4663 Removed double firewall_restriction entry (vlad-ghita)

This PR was submitted for the 2.6 branch but it was merged into the 2.5 branch instead (closes #4663).

Discussion
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Removed double `firewall_restriction` entry

Commits
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714b2ca Removed double `firewall_restriction` entry

Author: wouterj

cookbook/map.rst.inc

@@ -147,6 +147,7 @@
   * :doc:`/cookbook/security/acl_advanced`
   * :doc:`/cookbook/security/force_https`
   * :doc:`/cookbook/security/firewall_restriction`
+  * :doc:`/cookbook/security/host_restriction`
   * :doc:`/cookbook/security/form_login`
   * :doc:`/cookbook/security/securing_services`
   * :doc:`/cookbook/security/custom_provider`

cookbook/security/index.rst

@@ -14,7 +14,6 @@ Security
     force_https
     firewall_restriction
     host_restriction
-    firewall_restriction
     form_login
     securing_services
     custom_provider