Change equality sign = to equality sign ==

Author: leviding

1-js/02-first-steps/09-comparison/article.md

@@ -6,7 +6,7 @@ In JavaScript they are written like this:
 
 - Greater/less than: <code>a &gt; b</code>, <code>a &lt; b</code>.
 - Greater/less than or equals: <code>a &gt;= b</code>, <code>a &lt;= b</code>.
-- Equals: `a == b`, please note the double equality sign `=` means the equality test, while a single one `a = b` means an assignment.
+- Equals: `a == b`, please note the double equality sign `==` means the equality test, while a single one `a = b` means an assignment.
 - Not equals. In maths the notation is <code>&ne;</code>, but in JavaScript it's written as <code>a != b</code>.
 
 In this article we'll learn more about different types of comparisons, how JavaScript makes them, including important peculiarities.