Modify rule S1126: Use the terms 'truthy' and 'falsy' (#3548)

rules/S1126/javascript/rule.adoc

@@ -1,6 +1,6 @@
 == Why is this an issue?
 
-The ``++if...else++`` statement is used to make decisions based on the truthiness of a boolean expression, and the ``++if++`` block executes when the expression is ``++true++``, while the ``++else++`` block executes when the expression is false.
+The ``++if...else++`` statement is used to make decisions based on the truthiness of a boolean expression, and the ``++if++`` block executes when the expression is truthy, while the ``++else++`` block executes when the expression is falsy.
 
 Wrapping a boolean expression in an ``++if...else++`` statement and returning ``++true++`` or ``++false++`` in the respective blocks is redundant and unnecessary. It can also make the code harder to maintain, as it adds unnecessary lines of code that need to be read and understood.