Adjust cookie tutorial

[rsaz]

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Before submitting a Pull Request, please make sure you have verified the following:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

PR Type

What kind of change does this PR introduce?

• Documentation fix
• Documentation update
• New Feature
• Translation:: New language
• Bugfix
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior?

Please describe the current behavior that you are modifying, or link to a relevant issue.
Issue Number: N/A

-> Response: Cookies tutorial are reflecting previous API

What is the new behavior?

Describe the new behavior or link to a relevant issue.

-> Response: Cookie is updated to the new AppFactory and App class API

Does this PR introduce a breaking change?

• Yes
• No

If this PR contains a breaking change, please describe the impact and migration path for existing applications below.

-> Response: N/A

Other information

Any other information that is important to this PR.

• N/A

-> Response: