fix: Correct AboutLibraries plugin ID for Android sample close #468

[keta1]

The aboutlibraries plugin ID in the Android sample was updated from the generic com.mikepenz.aboutlibraries.plugin to the specific com.mikepenz.aboutlibraries.plugin.android.

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context.

Fixes #468

Type of change

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• 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 not work as expected)
• Documentation update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build configuration change
• Other (please describe):

Checklist:

• 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

[mikepenz]

Thank you @keta1

However, both plugins should be defined. the android variant only defines the android linking logic, while the other has all the common tasks