Catchability prior sd multiplied by sqrt(1/nyrs) in FM.tpl

[grantdadams]

If running FM with time-invariant catchability and a prior, FM will decrease q_sigma by a factor of sqrt(1/nyrs).

q_srv is a vector of length nyrs (styr to endyr) even when derived from a single parameter

flatfish/src/fm.tpl

Line 674 in 3d9b975

// matrix q_srv(1,nsrv,styr,endyr)

however, the catchability prior is applied to the entire q_srv vector rather than a single parameter https://github.com/afsc-assessments/flatfish/blob/3d9b975bec0df9b63d8369226e5f3987f15e5b34/src/fm.tpl#L1460C1-L1463C7

effectively multiplying q_sigma by sqrt(1/nyrs)

This may be intended, but wanted to flag!