Update isEUCountry (#24364)

PCX-17833

Author: kodster28

src/content/docs/workers/runtime-apis/request.mdx

@@ -241,7 +241,7 @@ All plans have access to:
 
 * `isEUCountry` string | null
 
-  * If the country of the incoming request is in the EU, this will return `"1"`. Otherwise, this property will be omitted.
+  * If the country of the incoming request is in the EU, this will return `"1"`. Otherwise, this property is either omitted or `false`.
 
 * `httpProtocol` string
 
@@ -436,4 +436,4 @@ Using any other type of `ReadableStream` as the body of a request will result in
 * [Examples: Modify request property](/workers/examples/modify-request-property/)
 * [Examples: Accessing the `cf` object](/workers/examples/accessing-the-cloudflare-object/)
 * [Reference: `Response`](/workers/runtime-apis/response/)
-* Write your Worker code in [ES modules syntax](/workers/reference/migrate-to-module-workers/) for an optimized experience.
+* Write your Worker code in [ES modules syntax](/workers/reference/migrate-to-module-workers/) for an optimized experience.