docs: Fix lint errors

Author: patrikbraborec

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

@@ -31,7 +31,7 @@ Only revenue and cost for Apify customers on paid plans are taken into considera
 
 ## PPR vs PPE
 
-PPR charges based on the number of results produced. PPE lets you define pricing for individual events, and help you to make your pricing more flexible. You can charge for specific events directly from your Actor by calling the PPE charging API. 
+PPR charges based on the number of results produced. PPE lets you define pricing for individual events, and help you to make your pricing more flexible. You can charge for specific events directly from your Actor by calling the PPE charging API.
 
 :::info Learn more about PPE
 
@@ -207,7 +207,7 @@ This ensures that every run generates at least one result, guaranteeing that use
 
 You make your Actor PPR and set the price to be _$1/1,000 results_. During the first month, three users use your Actor.
 
-#### Pricing breakdown by user
+### Pricing breakdown by user
 
 <table>
   <thead>
@@ -262,7 +262,7 @@ You make your Actor PPR and set the price to be _$1/1,000 results_. During the f
 
 The platform usage costs are just examples, but you can see the actual costs in the [Computing your costs for PPE and PPR Actors](/platform/actors/publishing/monetize/pricing-and-costs#computing-your-costs-for-ppe-and-ppr-actors) section.
 
-#### Revenue breakdown
+### Revenue breakdown
 
 - **Revenue (paid users only)**: $50.00 + $20.00 = **$70.00**
 - **Underlying cost (paid users only)**: $5.00 + $2.00 = **$7.00**