Challenge: Real-World Anonymous Functions

Use your knowledge of anonymous functions and lapply to solve a practical data transformation problem.
Write a function capitalize_first that takes a list of names and returns a new list where each name has its first letter capitalized.

• Use lapply to apply an anonymous function to each element of names_list.
• The anonymous function should capitalize only the first letter of each name, leaving the rest unchanged.
• The function must return a list with the transformed names.