Update cheatsheet.fr.md

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

@@ -1021,8 +1021,8 @@ _{\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{\left(\underbrace{\dfrac{dv^a}{d\lambda}\,+\,\Gamma_{bc}^{\;a}\,\dfrac{dx^b}{d\lambda}\,v^c}
-_{\color{blue}{=\,\dfrac{Dv^a}{D\lambda}}}\right)\,\mathbf{e_a}}}
+&=\color{brown}{\Large{\underbrace{\left(\dfrac{dv^a}{d\lambda}\,+\,\Gamma_{bc}^{\;a}\,\dfrac{dx^b}{d\lambda}\,v^c\right)}
+_{\color{blue}{=\,\dfrac{Dv^a}{D\lambda}}}\,\mathbf{e_a}}}
 \end{align}`$