fix: Indentation

Syntax tweak

Author: lahovniktadej

niaarm/rule.py

@@ -159,13 +159,13 @@ class Rule:
         leverage: difference between the frequency of antecedent and the consequent appearing together and the expected
         frequency of them appearing separately based on their individual support
 
-        :math:`leverage(X \implies Y) = support(X \implies Y) - (support(X) \times support(Y))`
+         :math:`leverage(X \implies Y) = support(X \implies Y) - (support(X) \times support(Y))`
 
-        **Range:** :math: `[-1, 1]` (-1 reflects total negative association, 1 reflects perfect positive association
+         **Range:** :math:`[-1, 1]` (-1 reflects total negative association, 1 reflects perfect positive association
          and 0 reflects independence)
 
-        **Reference:** Gregory Piatetsky-Shapiro. 1991. Discovery, Analysis, and Presentation of Strong Rules. In
-        Knowledge Discovery in Databases, Gregory Piatetsky-Shapiro and William J. Frawley (Eds.). AAAI/MIT Press, 229–248.
+         **Reference:** Gregory Piatetsky-Shapiro. 1991. Discovery, Analysis, and Presentation of Strong Rules. In
+         Knowledge Discovery in Databases, Gregory Piatetsky-Shapiro and William J. Frawley (Eds.). AAAI/MIT Press, 229–248.
     """
 
     __slots__ = (