Update cheatsheet.fr.md

12.temporary_ins/90.electromagnetism-in-vacuum/20.electromagnetic-waves-vacuum/20.overview/cheatsheet.fr.md

@@ -190,10 +190,7 @@ figure à faire
     \\
     &\dfrac{\partial E_x}{\partial x}=\dfrac{\partial E_y}{\partial y}=0
     \end{align}\right\}`$
-    **$`\large{\boldsymbol{\mathbf{\Longrightarrow\;\begin{align}\\\dfrac{\partial E_z}{\partial z}=0\\(équa.1)\end{align}}}}`$**   
-    **$`\large\boldsymbol{\mathbf{\Longrightarrow\;\begin{align}\\
-        \large\boldsymbol{\mathbf{\dfrac{\partial E_z}{\partial z}=0\\(équa.1)}}}
-        \end{align}`$**   
+    **$`\large{\boldsymbol{\mathbf{\Longrightarrow\;\begin{align}\\\dfrac{\partial E_z}{\partial z}=0\\\\(équa.1)\end{align}}}}`$**   
     
 <br>
 
@@ -218,14 +215,16 @@ figure à faire
     &\quad =\dfrac{\partial E_y}{\partial y}=\dfrac{\partial E_z}{\partial y}=0
     \end{align}\right\}`$   
     <br>
-    **$`\boldsymbol{\mathbf{\Longrightarrow\left\{
+    **$`\large{\boldsymbol{\mathbf{\Longrightarrow\left\{
     \begin{align}
     &\dfrac{\partial B_x}{\partial t}=+ \dfrac{\partial E_y}{\partial z}\\
     \\
     &\dfrac{\partial B_y}{\partial t}=- \dfrac{\partial E_x}{\partial z}\\
     \\
-    &\dfrac{\partial B_z}{\partial t}=0\quad(équa.2)
-    \end{align}\right.}}}`$**
+    &\dfrac{\partial B_z}{\partial t}=0
+    \\
+    \quad(équa.2)
+    \end{align}\right.}}}}`$**
 
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