fix(vignette): misspelling in V02.2_param_mcmc vignette

InputsCrit$Qobs -> InputsCrit$Obs
Refs #52

vignettes/V02.2_param_mcmc.Rmd

@@ -68,7 +68,7 @@ LogLikeGR4J <- function(ParamOptim) {
                                        RunOptions = RunOptions,
                                        Param = RawParamOptim)
   ## Computation of the log-likelihood: N * log(SS)
-  ObsY <- InputsCrit$Qobs
+  ObsY <- InputsCrit$Obs
   ModY <- OutputsModel$Qsim
   LogLike <- sum(!is.na(ObsY)) * log(sum((ObsY - ModY)^2, na.rm = TRUE))
 }