Update sources/platform/actors/publishing/monetize.mdx

Co-authored-by: Michał Olender <[email protected]>

Author: mhamas

sources/platform/actors/publishing/monetize.mdx

@@ -41,7 +41,7 @@ You make your Actor rental with 7-day free trial and then $30/month. During the
 The first user pays their first rent 7 days after the free trial, i.e., on the 22nd of the month. The second user only starts paying the rent next month. The third user is on the Apify free plan, so after the free trial ends on the 27th of the month, they are not charged and cannot use the Actor further until they get a paid plan. Your profit is computed only from the first user. They were charged $30, so 80% of this goes to you, i.e., _0.8 * 30 = $24_.
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-### Pay-per-result pricing model
+### Pay-per-result(PPR) pricing model
 
 In this model, you set a price per 1,000 results. Users are charged based on the number of results your Actor produces and stores in the run's default dataset. Your profit is calculated as 80% of the revenue minus platform usage costs. The formula is: