fixed key error for like_count

[pandeyganesha]

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Issue #8759 mentions, "No longer extracting like_count for video metadata". It was happeing because vpir did not have the values of like and dislike counts where it was specified. So that was returning None value while int was expected.

Fixes #

So I updated the reference to the correct place of likes and the problems is solved. The test case is passing

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