Update LICENSE_HEADER.md

[tacoelho]

Link updated.

Just changed de Adobe copyright url.

Description

Replaced deprecated url with the right Adobe copyright link.

Related Issue

Issue #10

Motivation and Context

If the user wants to go deeper into Adobe copyright then the link should point to the right page.

How Has This Been Tested?

Replaced the link and tested it.

Screenshots (if appropriate):

Types of changes

• [x ] Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x ] I have signed the Adobe Open Source CLA.
• [x ] My code follows the code style of this project.
• [x ] My change requires a change to the documentation.
• [x ] I have updated the documentation accordingly.
• [ x] I have read the CONTRIBUTING document.
• [x ] I have added tests to cover my changes.
• All new and existing tests passed.

[filmaj]

There is an existing PR open to deal with this: #13

[tacoelho]

Bummer.