Update cheatsheet.fr.md

12.temporary_ins/90.electromagnetism-in-vacuum/10.maxwell-equations/20.overview/cheatsheet.fr.md

@@ -162,7 +162,7 @@ $`\left.\begin{array}{l}
 \iint_{S} \;\overrightarrow{rot}\,\overrightarrow{E} \cdot dS = \oint_{\Gamma\leftrightarrow S} \overrightarrow{E}\cdot\overrightarrow{dl}
 \end{array}\right\}
 \Longrightarrow`$
-**$`\mathbf{\displaystyle\iint_{S} \;\overrightarrow{rot}\,\overrightarrow{E} \cdot dS}= -\dfrac{\partial}{\partial t}\iiint_{\Ltau}\overrightarrow{B}\, d\tau}`$**
+**$`\mathbf{\displaystyle\iint_{S} \;\overrightarrow{rot}\,\overrightarrow{E} \cdot dS= -\dfrac{\partial}{\partial t}\iiint_{\Ltau}\overrightarrow{B}\, d\tau}`$**
 
 * *Maxwell-Ampère* :