Update variablesDataTypes.md

Author: Sandeep-source

1_variables_and_data_types/variablesDataTypes.md

@@ -41,7 +41,7 @@ There are 3 ways of representing a string:
 We can use Single Quote or Double Quote if we just want to statically display it.
 
 ```js
-const singleQuote = "Hello";
+const singleQuote = 'Hello';
 const doubleQuote = "Hello";
 ```
 
@@ -115,4 +115,4 @@ console.log(typeof arr); // object
 
 // date is an object;
 const date = new Date();
-console.log(typeof date); // object
+console.log(typeof date); // object