Fix/sketch data features docstring

DESCRIPTION

@@ -1,5 +1,5 @@
 Package: Seurat
-Version: 5.1.0.9007
+Version: 5.1.0.9008
 Title: Tools for Single Cell Genomics
 Description: A toolkit for quality control, analysis, and exploration of single cell RNA sequencing data. 'Seurat' aims to enable users to identify and interpret sources of heterogeneity from single cell transcriptomic measurements, and to integrate diverse types of single cell data. See Satija R, Farrell J, Gennert D, et al (2015) <doi:10.1038/nbt.3192>, Macosko E, Basu A, Satija R, et al (2015) <doi:10.1016/j.cell.2015.05.002>, Stuart T, Butler A, et al (2019) <doi:10.1016/j.cell.2019.05.031>, and Hao, Hao, et al (2020) <doi:10.1101/2020.10.12.335331> for more details.
 Authors@R: c(

R/sketching.R

@@ -31,6 +31,8 @@ NULL
 #' @param seed A positive integer for the seed of the random number generator. Default is 123.
 #' @param cast The type to cast the resulting assay to. Default is 'dgCMatrix'.
 #' @param verbose Print progress and diagnostic messages
+#' @param features A character vector of feature names to include in the
+#' sketched assay.
 #' @param ... Arguments passed to other methods
 #'
 #' @return A Seurat object with the sketched data added as a new assay.