Update cheatsheet.fr.md

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

@@ -887,9 +887,8 @@ $`\begin{align}
 \Large{\color{blue}{\partial_b\mathbf{v}}}&=\partial_b\,
 \underbrace{(v^a\,\mathbf{e_a})}
 _{\begin{array}{c}
-v^a\text{ ET }\mathbf{e_a}\\
-\text{varient sur }\mathscr{V}\end{array}
-}\\
+\color{color}{v^a\text{ et }\mathbf{e_a}\\
+\text{varient}}\end{array}}\\
 \\
 &=(\partial_b\,v^a)\;\mathbf{e_a} + v^a\,(\partial_b\;\mathbf{e_a})\\
 \\