docs: add missing Fortran Outputs units in the comments of RunModel_* functions

4 jobs for 105-using-wrong-precipitation-inputs-when-calling-gr5h-in-cemaneigegr5h in 15 minutes and 32 seconds (queued for 20 minutes and 34 seconds)
Status Job ID Name Coverage
  Build
passed #160558
build_patched

00:00:28

 
  Regression
passed #160559
regression_patched

00:01:01

 
  Tests
passed #160561
check_as_cran_patched

00:02:03

passed #160560
check_not_cran_patched

00:11:58