update bookdowm doc
diff --git a/docs/bookdown/bookdown_example.tex b/docs/bookdown/bookdown_example.tex
index cc2ec9b..2a320f1 100644
--- a/docs/bookdown/bookdown_example.tex
+++ b/docs/bookdown/bookdown_example.tex
@@ -125,7 +125,7 @@
\postauthor{\par}
\predate{\centering\large\emph}
\postdate{\par}
- \date{2018-10-03}
+ \date{2018-10-04}
\usepackage{booktabs}
\usepackage{booktabs}
@@ -279,7 +279,6 @@
\begin{Shaded}
\begin{Highlighting}[]
\KeywordTok{library}\NormalTok{(kableExtra)}
-\KeywordTok{options}\NormalTok{(}\DataTypeTok{kableExtra.html.bsTable =}\NormalTok{ T)}
\NormalTok{mtcars[}\DecValTok{1}\OperatorTok{:}\DecValTok{5}\NormalTok{, }\DecValTok{1}\OperatorTok{:}\DecValTok{5}\NormalTok{] }\OperatorTok{%>%}
\StringTok{ }\KeywordTok{kable}\NormalTok{(}\DataTypeTok{booktabs =}\NormalTok{ T) }\OperatorTok{%>%}\StringTok{ }