Update billing-api.mdx (#4318)

Author: brianmacdonald-temporal

docs/cloud/billing-api.mdx

@@ -51,7 +51,7 @@ Reports can be generated with hourly granularity only, for the current billing m
 
 Date ranges must use billing-month boundaries (MM/YYYY). 
 Requests may include the current billing month. 
-The data in finalized reports includes usage up to `current\_time` \- 24 hours (rounded up to nearest hour).
+The data in finalized reports includes usage up to `current_time` \- 24 hours (rounded up to nearest hour).
 
 :::info Limitiations
 
@@ -158,4 +158,4 @@ To generate a report, follow these steps:
 | `billing_report_id` | Identifies the billing report artifact and is used to retrieve metadata and download URLs |
 | `async_operation_id` | Identifies the background operation responsible for generating the report |
 
-The async operation follows the standard Cloud Operations async model (see [Async Operations](/ops#per-identity-rate-limits).
+The async operation follows the standard Cloud Operations async model (see [Async Operations](/ops#per-identity-rate-limits)).