Update cheatsheet.fr.md

12.temporary_ins/20.magnetostatics-vacuum/40.ampere-theorem-applications/25.torus-solenoid/10.ampere-integral/20.overview/cheatsheet.fr.md

@@ -350,8 +350,7 @@ $`\left.\begin{matrix}
 \overrightarrow{B}=B_{\varphi}\,\overrightarrow{e_{\varphi}}\\
 \oint \overrightarrow{B}\cdot\overrightarrow{dl}=+2\pi\rho\,B_{\varphi}
 =\mu_0\sum \overline{I}=0\\
-\end{matrix}\right\}`$
-$`\Longrightarrow`$
+\end{matrix}\right\Longrightarrow}`$
 **$`\;\color{brown}{\mathbf{\overrightarrow{B}=\overrightarrow{0}}}`$**   
 
 
@@ -371,8 +370,7 @@ $`\left.\begin{matrix}
 \overrightarrow{B}=B_{\varphi}\,\overrightarrow{e_{\varphi}}\\
 \oint \overrightarrow{B}\cdot\overrightarrow{dl}=+2\pi\rho\,B_{\varphi}
 =\mu_0\sum \overline{I}=0\\
-\end{matrix}\right\}`$
-$`\Longrightarrow`$
+\end{matrix}\right\Longrightarrow}`$
 **$`\;\color{brown}{\mathbf{\overrightarrow{B}=\overrightarrow{0}}}`$**   
 
 <br>
@@ -390,8 +388,7 @@ $`\left.\begin{matrix}
 \overrightarrow{B}=B_{\varphi}\,\overrightarrow{e_{\varphi}}\\
 \oint \overrightarrow{B}\cdot\overrightarrow{dl}=+2\pi\rho\,B_{\varphi}
 =\mu_0\sum \overline{I}=-\,N\,I\\
-\end{matrix}\right\}`$
-$`\Longrightarrow`$
+\end{matrix}\right\Longrightarrow}`$
 **$`\;\color{brown}{\mathbf{\overrightarrow{B}=-\dfrac{\mu_O\,N\,I}{2\pi\,\rho}\overrightarrow{e_{\varphi}}}}`$**   
 
 <br>
@@ -407,8 +404,7 @@ $`\left.\begin{matrix}
 \overrightarrow{B}=B_{\varphi}\,\overrightarrow{e_{\varphi}}\\
 \oint \overrightarrow{B}\cdot\overrightarrow{dl}=+2\pi\rho\,B_{\varphi}
 =\mu_0\sum \overline{I}=0\\
-\end{matrix}\right\}`$
-$`\Longrightarrow`$
+\end{matrix}\right\Longrightarrow}`$
 **$`\;\color{brown}{\mathbf{\overrightarrow{B}=\overrightarrow{0}}}`$**