fixed typo, change or -> OR

Author: geoknee

_sessions/c3s2/5_boolean_ops.md

@@ -12,7 +12,7 @@ else
 end
 {% endhighlight %}
 
-It the above snippet of code the `||` means or. If the person is under 12 or is smaller than 1.2m they are allowed on the ride.
+In the above snippet of code, the `||` means OR. If the person is under 12 or is smaller than 1.2m they are allowed on the ride.
 
 ### Logical operations
 
@@ -60,4 +60,4 @@ The `!` is not. It is a quick way of reversing the truth of the condition:
 
 (1<=2 && 3>4) || (3 <= 4 && "ham")
 {% endhighlight %}
-{% endexercise %}
+{% endexercise %}