Fixed typo in entropy calculation equation

qip-0006.md

@@ -137,7 +137,7 @@ the condition $S_{int} > S_{target}$ is met.
 
 The transaction entropy for a set of transactions included in block $i$ is computed as follows:
 
-$$ x_{tx,i,j} = log(k - hash_{tx,i,j}) $$
+$$ x_{tx,i,j} = log(k/hash_{tx,i,j}) $$
 
 $$ S_{tx,i} = \sum_{l=i-m}^{i} \frac{1}{2^{l}} \times e^{-S_{int,i}} \sum_{j=0}^{q_i} \frac{x_{tx,i,j}}{e^{-x_{tx,i,j}}} $$