Fix: Doc build by referring the Footnote
Footnote for zabbix manual was defined but not referenced,
this causes Sphinx WARNING: Footnote [#] is not referenced
and fails doc build(tox -edocs) as Warning is treated as
Error is enabled by adding flag(-W). This patch fixes it.
@@ -76,7 +76,7 @@ execution of action commands created by Zabbix-Server.
Because Zabbix Server requires a lot of processes for monitoring
projects, it is recommended to build it as a separate physical
node if performance stability is required. Installation instructions
-for Zabbix Server are detailed in the manual provided by Zabbix.
+for Zabbix Server are detailed in the manual provided by Zabbix (see [#first]_).
Examples of installation procedures are based on Ubuntu16.04
and zabbix 3.2.
