Fix monospace markup in parameters list of String != reference (#869)

A missing closing backtick caused the content to be incorrectly rendered.

Author: abdullah-1307

Language/Variables/Data Types/String/Operators/differentFrom.adoc

@@ -7,8 +7,6 @@ subCategories: [ "StringObject Operator" ]
 
 
 
-
-
 = != Different From
 
 
@@ -30,7 +28,7 @@ Compares two Strings for difference. The comparison is case-sensitive, meaning t
 
 [float]
 === Parameters
-`myString1: a String variable. +
+`myString1`: a String variable. +
 `myString2`: a String variable.