Sticky acknowledgements wrongly documented

[eythori-sensa]

http://www.naemon.org/documentation/developer/externalcommands/acknowledge_svc_problem.html

"If the ‘sticky’ option is set to two (2), the acknowledgement will remain until the service returns to an OK state"

This is incorrect in the sense that if you set this option to 1, it's still enabled, and behaves just like if it's a 2.
The correct documentation would be:
"If the ‘sticky’ option is set to anything other than zero (0), the acknowledgement will remain until the service returns to an OK state"

[sni]

Could you put this into a pull request? Thanks.