fix typos

src/content/account/billing.md

@@ -83,13 +83,13 @@ For example, if you want to get a notification when you use 90% of the 35,000 sn
 
 <div class="callout">
 
-This a new feature that is rolling out in phases. If you don't see it yet, don't worry—it's coming soon. Meanwhile, you can access the [monthly and yearly CSV exports](#export-monthly-and-yearly-usage-data-as-csv).
+This is a new feature that is rolling out in phases. If you don't see it yet, don't worry—it's coming soon. Meanwhile, you can access the [monthly and yearly CSV exports](#export-monthly-and-yearly-usage-data-as-csv).
 
 </div>
 
 Access usage reports for each billing period on the billing page. These reports offer a detailed breakdown of usage and display the invoice statement.
 
-The **usage section** provides a per-project summary of Snapshots and TurboSnaps utilized (only available for billing periods after July 25, 2024).
+The **usage section** provides a per-project summary of Snapshots and TurboSnaps utilized (only available for billing periods after July 25th 2024).
 
 The **invoice** includes details of the active plan for the billing period, the base number of snapshots included, any overage charges for additional snapshots, and a link to download a PDF copy of the invoice (available for all billing periods).