Update data synced FAQ wording (#487)

Reword the data synced FAQ from passive to active voice for clarity.

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

Author: benitav

resources/usage-and-billing/usage-and-billing-faq.mdx

@@ -53,7 +53,7 @@ description: "Troubleshoot usage and billing issues and find answers to common q
   <Accordion title="What is data synced?">
     Data synced is the only metric used for data throughput billing in our [updated Cloud pricing model](https://www.powersync.com/blog/simplified-cloud-pricing-based-on-data-synced).
 
-    It measures the total uncompressed size of data synced from PowerSync Service instances to client devices. If the same data is synced by multiple users, each transfer counts toward the total.
+    It measures the total uncompressed size of data synced from PowerSync Service instances to client devices. If multiple users sync the same data, each transfer counts toward the total.
 
     **Billing (Pro/Team)**: 30 GB included, then $1.00 per GB over the included amount.
   </Accordion>