Correction of scheduler timeout setting description

[KLarpen]

Scheduler settings in config/server.js used by Impress https://github.com/metarhia/impress/blob/1fd89f6ef109f2bb84267e0b40af51a90b804479/impress.js#L160-L161 Planner for creating Semaphores per task topic https://github.com/metarhia/impress/blob/1fd89f6ef109f2bb84267e0b40af51a90b804479/lib/planner.js#L140-L148

Semaphore's timeout can't limit task execution time because it's purpose to limit time awaiting in a queue.