Item descriptions get surrounded by wrong curly braces in LaTeX export

[Joon Ro]

Hi,

I noticed that in LaTeX export, descriptions in description lists are surrounded by {} instead of [] in LaTeX export, making them not correctly rendered. 

For example, the following 

- Description :: Item

- Description :: Item

gets exported as

\begin{description}
\item{Description} Item
\item{Description} Item
\end{description}

instead of 

\begin{description}
\item[Description] Item
\item[Description] Item
\end{description}

and thus they are not correctly rendered in the PDF output.

I'm currently using Org mode version 9.3.6 (9.3.6-4-gdfa7a3-elpaplus @ c:/Users/joon/.emacs.d/elpa/org-plus-contrib-20200217/)