update doc with Aki's suggestion

Author: jgabry

R/fit.R

@@ -715,8 +715,9 @@ CmdStanFit$set("public", name = "constrain_variables", value = constrain_variabl
 #' the variational method for performing the checks described in Yao et al.
 #' (2018) and implemented in the \pkg{loo} package.
 #'
-#' For Laplace approximation `lp_approx__` is the the unnormalized density of
-#' the Laplace approximation.
+#' For Laplace approximation `lp_approx__` is the unnormalized density of the
+#' Laplace approximation. It can be used to perform the same checks as in the
+#' case of the variational method described in Yao et al. (2018).
 #'
 #' @return A numeric vector with length equal to the number of (post-warmup)
 #'   draws or length equal to `1` for optimization.