Change 'Path is find!' to 'Path found!'

[usamahz]

Minor - correct grammatical error :)

Reference issue

What does this implement/fix?

This corrects a minor grammatical error in the print message, which is shown when the path search is successful.

Additional information

CheckList

• Did you add an unittest for your new example or defect fix?
• Did you add documents for your new example?
• All CIs are green? (You can check it after submitting)

[AtsushiSakai]

LGTM. Thanks.