[5.0] GuidedtoursHelper update header

[heelc29]

Summary of Changes

subpackage and copyright in header of new file GuidedtoursHelper.php corrected (added with #41161)

Testing Instructions

code review

[richard67]

I have tested this item ✅ successfully on cbf7598

Code review.

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[alikon]

I have tested this item ✅ successfully on cbf7598

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[alikon]

RTC

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