add strikeout and underline to spec functions
diff --git a/docs/awesome_table_in_pdf.Rmd b/docs/awesome_table_in_pdf.Rmd
index 580495b..acd8a75 100644
--- a/docs/awesome_table_in_pdf.Rmd
+++ b/docs/awesome_table_in_pdf.Rmd
@@ -18,6 +18,7 @@
   - \usepackage{pdflscape}
   - \usepackage{tabu}
   - \usepackage{threeparttable}
+  - \usepackage[normalem]{ulem}
 vignette: >
   %\VignetteIndexEntry{Create Awesome PDF Table with knitr::kable and kableExtra}
   %\VignetteEngine{knitr::rmarkdown}
@@ -82,6 +83,7 @@
   - \usepackage{pdflscape}
   - \usepackage{tabu}
   - \usepackage{threeparttable}
+  - \usepackage[normalem]{ulem}
 ```
 
 ## Plain LaTeX
@@ -199,6 +201,7 @@
 kable(dt, format = "latex", booktabs = T) %>%
   kable_styling("striped", full_width = F) %>%
   column_spec(7, border_left = T, bold = T) %>%
+  row_spec(1, strikeout = T) %>%
   row_spec(3:5, bold = T, color = "white", background = "black")
 ```