Update to use tsx for executing scripts

docs/60-schema-validation/2-validate-users.mdx

@@ -83,7 +83,7 @@ You need to run the script to apply the schema to the `users` collection.
 
  ```sh
  cd server
- node dist/schema-validation/apply-schema.js 
+ npx tsx src/schema-validation/apply-schema.ts
 
  ```
 
@@ -112,7 +112,7 @@ Now that the schema validation is enabled for the `users` collection, you can te
 3. Execute the script by running the following command.
 
  ```node
- node dist/schema-validation/test-validation.js
+ npx tsx src/schema-validation/test-validation.ts
  ```
 
 The error describes that the `name` and `isAdmin` fields are required but missing in the document you tried to insert.

docs/60-schema-validation/3-validate-authors.mdx

@@ -9,7 +9,7 @@ This is an advanced exercises that requires you to write code. If you get stuck
 1. Execute the script again to apply the schema to the `authors` collection.
  ```bash
  cd server
- node dist/schema-validation/apply-schema.js 
+ npx tsx src/schema-validation/apply-schema.ts
 
  ```
 1. Finally, test the schema validation by modifying the `server/src/schema-validation/test-validation.ts` script. Inserting a document in the `authors` collection.