Fix broken URLs

src/roadmaps/software-design-architecture/content/102-object-oriented-programming/100-primary-principles/102-abstraction.md

@@ -9,5 +9,4 @@ There are two types of abstraction:
 
 Learn more from the following links:
 
-- [What is Abstraction?](Abstraction)
 - [Tutorial - Abstraction](https://www.youtube.com/watch?v=OF55HZPE7lQ)

src/roadmaps/software-design-architecture/content/108-enterprise-patterns/101-identity-maps.md

@@ -7,4 +7,4 @@ The identity map pattern is typically used in conjunction with an ORM (Object-Re
 Learn more from the following links:
 
 - [Overview of Identity map pattern](https://en.wikipedia.org/wiki/Identity_map_pattern)
-- [Tutorial - Identity Map Design Pattern](youtube.com/watch?v=erDxkIyNudY)
+- [Tutorial - Identity Map Design Pattern](https://youtube.com/watch?v=erDxkIyNudY)

src/roadmaps/typescript/content/113-modules/100-namespaces.md

@@ -23,4 +23,4 @@ Learn more from the following resources:
 
 - [Overview of Namespaces](https://www.typescriptlang.org/docs/handbook/namespaces.html)
 - [Namespaces and Modules](https://www.typescriptlang.org/docs/handbook/namespaces-and-modules.html)
-- [TypeScript - Using Namespaces](typescriptlang.org/docs/handbook/namespaces-and-modules.html#using-namespaces)
+- [TypeScript - Using Namespaces](https://typescriptlang.org/docs/handbook/namespaces-and-modules.html#using-namespaces)