Sync say (issue #989)

[resu-xuniL]

• Synced say metadata and docs
• Removed strict types comments from example.php and SayTest.php
• Added UUID and TestDox to tests
• Added say to auto-sync.txt
• Added GitHub handle to config.json

Ref: #989

[no important files changed]

[github-actions]

This PR touches files which potentially affect the outcome of the tests of an exercise. This will cause all students' solutions to affected exercises to be re-tested.

If this PR does not affect the result of the test (or, for example, adds an edge case that is not worth rerunning all tests for), please add the following to the merge-commit message which will stops student's tests from re-running. Please copy-paste to avoid typos.

[no important files changed]

For more information, refer to the documentation. If you are unsure whether to add the message or not, please ping @exercism/maintainers-admin in a comment. Thank you!

[mk-mxp]

Thanks for the contribution, that looks great!

[mk-mxp]

Ref: #989

PS: If you write Closes #989, GitHub will automatically close the issue when the PR is merged.