Update cheatsheet.fr.md

12.temporary_ins/07.geometry-coordinates-prop2/40.n4/20.overview/cheatsheet.fr.md

@@ -1022,7 +1022,7 @@ _{\color{blue}{\begin{array}{c}\text{a, b et c muets} \,\Longrightarrow \\ \text
 &=\dfrac{dv^a}{d\lambda}\,\mathbf{e_a}+\Gamma_{bc}^{\;a}\,\dfrac{dx^b}{d\lambda}\,v^c\,\mathbf{e_a}\\
 \\
 &\color{brown}{=\Large{\underbrace{\Bigg(\dfrac{dv^a}{d\lambda}\,+\,\Gamma_{bc}^{\;a}\,\dfrac{dx^b}{d\lambda}\,v^c\Bigg)}
-_{\normalsize{\color{blue}{=\,\dfrac{Dv^a}{D\lambda}}}\,\mathbf{e_a}}}}
+_{\normalsize{\color{blue}{=\,\dfrac{Dv^a}{D\lambda}}}}\,\mathbf{e_a}}}
 \end{align}`$