Merge pull request 0xPolygon#232 from 0xPolygon/EmpieichO-patch-1

Update user-fees.md - minor typos

Author: kmurphypolygon

docs/zkEVM/architecture/user-fees.md

@@ -1002,9 +1002,9 @@ Recall how we previously ended up computing the $\texttt{BreakEvenGasPriceRPC}$
     $$
 
     $$
-    \texttt{EffectivePercentageByte} = \texttt{EffectivePercentage} · 256 − 1 = 148
+    \texttt{EffectivePercentageByte} = \lfloor \texttt{EffectivePercentage} · 256 \rfloor − 1 = 158
     $$
 
     Observe that the user has been charged $62.3\%$ of the gas price they signed at the time of sending the transaction.
 
-    
+