Apply suggestions from PCX review

Co-authored-by: Maddy <[email protected]>

Author: pedrosousa

src/content/docs/rules/custom-errors/api-calls.mdx

@@ -14,7 +14,7 @@ To perform the same operations at the account level, use the corresponding accou
 
 ### Create a custom error asset
 
-The following `POST` request creates new a custom error asset in a zone based on the provided URL:
+The following `POST` request creates a new custom error asset in a zone based on the provided URL:
 
 ```bash
 curl "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/custom_pages/assets" \

src/content/docs/rules/custom-errors/reference/parameters.mdx

@@ -34,7 +34,7 @@ The status code must be between `400` and `999`.
 
 API name: **`asset_name`** <Type text="String"/> <MetaInfo text="Optional"/>
 
-The name of the [custom error asset](#custom-error-assets) you previously uploaded ( in the dashboard, you can create an asset when creating the rule). The asset may include [error tokens](/rules/custom-errors/reference/error-tokens/) that will be replaced with real values before sending the error response to the visitor.
+The name of the [custom error asset](#custom-error-assets) you previously uploaded (in the dashboard, you can create an asset when creating the rule). The asset may include [error tokens](/rules/custom-errors/reference/error-tokens/) that will be replaced with real values before sending the error response to the visitor.
 
 A custom error rule can only reference an asset defined in the same scope as the rule (that is, in the same zone or account).