Add frontend roadmap node types

src/data/roadmaps/javascript/content/102-javascript-datatypes/101-object/102-builtin-objects.md

@@ -14,4 +14,3 @@ Visit the following resources to learn more:
 
 - [Standard built-in objects](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects)
 - [JavaScript Built-in Objects](https://www.tutorialride.com/javascript/javascript-built-in-objects.htm)
-- [Built-in Objects](https://www.scaler.com/topics/javascript-built-in-objects/)

src/data/roadmaps/javascript/content/103-javascript-type-casting/101-explicit-type-casting.md

@@ -5,7 +5,6 @@ Type casting means transferring data from one data type to another by explicitly
 Visit the following resources to learn more:
 
 - [Type Conversion](https://www.c-sharpcorner.com/article/type-conversions-in-javascript/)
-- [Type casting](https://www.scaler.com/topics/javascript/type-conversion-in-javascript/)
 - [Data Type Conversion](https://youtu.be/VQLYiFqetZM)
 - [Type conversion](https://developer.mozilla.org/en-US/docs/Glossary/Type_Conversion)
 - [What is typecasting in JavaScript](https://www.tutorialspoint.com/explain-typecasting-in-javascript)

src/data/roadmaps/javascript/content/105-javascript-equality-comparisons/101-value-comparison-operators.md

@@ -8,5 +8,4 @@ In javascript, the `==` operator does the type conversion of the operands before
 
 Visit the following resources to learn more:
 
-- [The Difference Between == and === in Javascript](https://www.scaler.com/topics/javascript/difference-between-double-equals-and-triple-equals-in-javascript/)
 - [Equality comparisons and sameness - MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Equality_comparisons_and_sameness#same-value_equality_using_object.is)