made the changes required

Author: hemangtk

en/interview-questions/basic-level.md

@@ -207,7 +207,7 @@ There are three types of scopes in JS:
 - [Local or Function Scope](#function-scope)
 - [Block Scope](#block-scope)
 
-<a name="global-scope"></a>
+<a id="global-scope"></a>
 **Global Scope**: Variables or functions declared in the global namespace have global scope, which means all the variables and functions having global scope can be accessed from anywhere inside the code.
 
 ```js
@@ -222,7 +222,7 @@ function sendMessage2() {
 sendMessage2(); // Returns “Hello world”
 ```
 
-<a name="function-scope"></a>
+<a id="function-scope"></a>
 **Function Scope**: Any variables or functions declared inside a function have `local/function scope`, which means that all the variables and functions declared inside a function, can be accessed from within the function and not outside of it.
 
 ```js
@@ -238,7 +238,7 @@ console.log(a); // Throws reference error since a is written in local scope and
 multiplyBy2(); // Throws reference error since multiplyBy2 is written in local scope
 ```
 
-<a name="block-scope"></a>
+<a id="block-scope"></a>
 **Block Scope**: `Block scope` is related to the variables declared using let and const. Variables declared with var do not have block scope. Block scope tells us that any variable declared inside a block `{ }`, can be accessed only inside that block and cannot be accessed outside of it.
 
 ```js