fix: maxwell equations typo

Author: SidonieBouthors

content/share/maxwell-equations.mdx

@@ -97,8 +97,10 @@ $$
 $$
 Maxwell's equation has the following component added to it :
 $$
-\mu_0 \varepsilon_0 \;\partial_t \iint_{\Sigma} \mathbf E \cdot d \mathbf s$$
-$$\int_{\partial \Sigma} \mathbf B \cdot d \mathbf l = \mu_0 \left( \iint_{\Sigma} \mathbf j \cdot d \mathbf s  + \varepsilon_0 \; \partial_t \iint_{\Sigma} \mathbf E \cdot d \mathbf s \right)
+\mu_0 \varepsilon_0 \;\partial_t \iint_{\Sigma} \mathbf E \cdot d \mathbf s
+$$
+$$
+\int_{\partial \Sigma} \mathbf B \cdot d \mathbf l = \mu_0 \left( \iint_{\Sigma} \mathbf j \cdot d \mathbf s  + \varepsilon_0 \; \partial_t \iint_{\Sigma} \mathbf E \cdot d \mathbf s \right)
 $$
 
 Using Stoke's Theorem :