docs(tex): undefined control sequence at compilation

See https://stackoverflow.com/questions/40438037/tightlist-error-using-pandoc-with-markdown

docs/latex/cassiopee_doc_en.tex

@@ -81,7 +81,8 @@
 \newcommand{\VariableTok}[1]{\textcolor[rgb]{0.10,0.09,0.49}{#1}}
 \newcommand{\VerbatimStringTok}[1]{\textcolor[rgb]{0.25,0.44,0.63}{#1}}
 \newcommand{\WarningTok}[1]{\textcolor[rgb]{0.38,0.63,0.69}{\textbf{\textit{#1}}}}
-
+% https://github.com/jgm/pandoc-templates/blob/bc7a16b590122a2dc99d1f17f222b72152acc1e7/default.latex#L310
+\providecommand{\tightlist}{\setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}
 
 %*******************************************************************************
 

docs/latex/cassiopee_doc_fr.tex

@@ -81,7 +81,8 @@
 \newcommand{\VariableTok}[1]{\textcolor[rgb]{0.10,0.09,0.49}{#1}}
 \newcommand{\VerbatimStringTok}[1]{\textcolor[rgb]{0.25,0.44,0.63}{#1}}
 \newcommand{\WarningTok}[1]{\textcolor[rgb]{0.38,0.63,0.69}{\textbf{\textit{#1}}}}
-
+% https://github.com/jgm/pandoc-templates/blob/bc7a16b590122a2dc99d1f17f222b72152acc1e7/default.latex#L310
+\providecommand{\tightlist}{\setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}
 
 %*******************************************************************************