Update cheatsheet.fr.md

12.temporary_ins/20.magnetostatics-vacuum/40.ampere-theorem-applications/30.cylindrical-current-distributions/10.rectilinear-current/10.ampere-integral/20.overview/cheatsheet.fr.md

@@ -205,7 +205,7 @@ $`\displaystyle\quad\quad=\oint_{\varphi=0}^{\varphi=2\pi}B_{\varphi}(\rho_M)\,\
 <br>
 $`\displaystyle\quad\quad=\rho_M\,B_{\varphi}(\rho_M)\,\oint_{\varphi=0}^{\varphi=2\pi}d\varphi`$    
 <br>
-**$`\quad\quad=\mathbf{\displaystyle\quad= 2\pi\,\rho_M\, B_{\varphi}(\rho_M)}`$**
+**$`\mathbf{\displaystyle\quad\quad = 2\pi\,\rho_M\, B_{\varphi}(\rho_M)}`$**
 
 <br>
 * Si *$`\mathbf{\overrightarrow{dl}=-\,\rho_M\,\overrightarrow{e_{\varphi}}}`$* :   
@@ -218,7 +218,7 @@ $`\displaystyle\quad\quad=-\oint_{\varphi=0}^{\varphi=2\pi}B_{\varphi}(\rho_M)\,
 <br>
 $`\displaystyle\quad\quad=-\rho_M\,B_{\varphi}(\rho_M)\,\oint_{\varphi=0}^{\varphi=2\pi}d\varphi`$   
 <br>
-*$`\quad\quad=\mathbf{\displaystyle\quad= -\,2\pi\,\rho_M\, B_{\varphi}(\rho_M)}`$*
+*$`\mathbf{\displaystyle\quad\quad = -\,2\pi\,\rho_M\, B_{\varphi}(\rho_M)}`$*
 
 
 #### Quelle surface ouverte $`\mathscr{S}_A`$ s'appuyant sur $`\Gamma_A`$ choisir ?