ITC-2794 Update description of use_aggressive_host_checking in nagios…

….cfg

naemon/naemon-core#278

src/config_templates/nagios/nagios.cfg

@@ -721,7 +721,7 @@ interval_length=1
 # AGGRESSIVE HOST CHECKING OPTION
 # If you don't want to turn on aggressive host checking features, set
 # this value to 0 (the default).  Otherwise set this value to 1 to
-# enable the aggressive check option. When enabled, Naemon will tread
+# enable the aggressive check option. When disabled (0), Naemon will treat
 # WARNING states as UP for host checks. This let's you use the same
 # check plugin for host and service checks. Read the docs for more info
 # on what aggressive host check is or check out the source code in