Update links

docs/en/Tutorials/Part-3.md

@@ -1185,4 +1185,4 @@ Clicking the "Delete" action calls the `delete` method which then shows a confir
 
 ## The Next Part
 
-See the [next part](part-4.md) of this tutorial.
+See the [next part](Part-4.md) of this tutorial.

docs/en/Tutorials/Part-4.md

@@ -252,4 +252,4 @@ Congratulations, the **green icons** indicates that the tests have been successf
 
 ## The Next Part
 
-See the [next part](part-5.md) of this tutorial.
+See the [next part](Part-5.md) of this tutorial.

docs/en/Tutorials/Part-5.md

@@ -406,4 +406,4 @@ Open the `/src/app/book/book.component.html` file and replace the edit and delet
 
 ## The Next Part
 
-See the [next part](part-6.md) of this tutorial.
+See the [next part](Part-6.md) of this tutorial.

docs/en/Tutorials/Part-6.md

@@ -286,4 +286,4 @@ This part covered the domain layer of the authors functionality of the book stor
 
 ## The Next Part
 
-See the [next part](part-7.md) of this tutorial.
+See the [next part](Part-7.md) of this tutorial.

docs/en/Tutorials/Part-7.md

@@ -233,4 +233,4 @@ namespace Acme.BookStore.Authors
 
 ## The Next Part
 
-See the [next part](part-8.md) of this tutorial.
+See the [next part](Part-8.md) of this tutorial.

docs/en/Tutorials/Part-8.md

@@ -572,4 +572,4 @@ Created some tests for the application service methods, which should be clear to
 
 ## The Next Part
 
-See the [next part](part-9.md) of this tutorial.
+See the [next part](Part-9.md) of this tutorial.

docs/en/Tutorials/Part-9.md

@@ -851,4 +851,4 @@ That's all! This is a fully working CRUD page, you can create, edit and delete a
 
 ## The Next Part
 
-See the [next part](part-10.md) of this tutorial.
+See the [next part](Part-10.md) of this tutorial.