Fix netstat

docs/20_Checks/_index.md

@@ -7,7 +7,7 @@ There is one include script used by all checks:
 
 ## Check scripts
 
-* check_apache_requests
+* [check_apache_requests](check_apache_requests.md)
 * check_backup_one
 * check_ceph_diskfree
 * check_ceph_osd
@@ -15,7 +15,7 @@ There is one include script used by all checks:
 * check_clientbackup
 * check_couchdb-lb
 * [check_cpu](check_cpu.md)
-* check_cronstatus
+* [check_cronstatus](check_cronstatus.md)
 * check_disk-io
 * check_dns_responsetime
 * [check_eol](check_eol.md)
@@ -23,13 +23,13 @@ There is one include script used by all checks:
 * check_haproxy_status
 * check_memory
 * check_netio
-* check_netstat
+* [check_netstat](check_netstat.md)
 * check_opencpu
 * check_packages2install
 * check_proc_mem
 * check_proc_ressources
 * check_proc_zombie
-* check_reboot_required
+* [check_reboot_required](check_reboot_required.md)
 * check_sensuplugins
 * check_smartstatus
 * [check_snmp_data](check_snmp_data.md)