Fix issue 8

_posts/2019-05-16-issue-8.md

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 title: Revuo Monero Weekly - May 16, 2019
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-7th issue of Revuo Monero Weekly. Week of May 9 - May 16, 2019.
+8th issue of Revuo Monero Weekly. Week of May 9 - May 16, 2019.
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 <h3>Table of Contents:</h3>