fix formula representation

neps/nep-0488.md

@@ -355,7 +355,7 @@ the implementation in the milagro lib[^29].
 
 For elements from $F_p$ the first three bits will always be $0$, because the first byte of $p$ equals $1$. As a result, 
 we can use these bits to encode extra information: the encoding format, the point at infinity, and the points' sign. 
-Read more in sections: Uncompressed/compressed points on curve $E(F_p)$/$E'(F_{p^2})$.
+Read more in sections: Uncompressed/compressed points on curve $E(F_p)$ / $E'(F_{p^2})$.
 
 #### Sign