RC bylaw update

Current bylaw:

GlueX running periods are supervised by a Run Coordinator (RC) who is responsible for day-to-day and week-to-week operations. An RC serves for at least two weeks at a time

Proposed change:

GlueX running periods are supervised by a Run Coordinator (RC) who is responsible for day-to-day and week-to-week operations. An RC serves for at least one week at a time