docs: update readme

Author: velut

README.md

@@ -34,14 +34,8 @@ It downloads packages from the npm registry and analyzes them to extract their p
 import { extractPackageApi } from "@jsdocs-io/extractor";
 
 (async () => {
-	const result = await extractPackageApi({ pkg: "preact" });
-	if (result.isOk()) {
-		const packageApi = result.value; // Successfully extracted API
-		console.log(JSON.stringify(packageApi, null, 2));
-	} else {
-		const extractorError = result.error; // Error extracting API
-		console.error(extractorError);
-	}
+	const packageApi = await extractPackageApi({ pkg: "preact" });
+	console.log(JSON.stringify(packageApi, null, 2));
 })();
 ```
 
@@ -52,13 +46,7 @@ import { extractPackageApi } from "@jsdocs-io/extractor";
 
 (async () => {
 	const result = await extractPackageApi({ pkg: "preact", subpath: "hooks" });
-	if (result.isOk()) {
-		const packageApi = result.value; // Successfully extracted API
-		console.log(JSON.stringify(packageApi, null, 2));
-	} else {
-		const extractorError = result.error; // Error extracting API
-		console.error(extractorError);
-	}
+	console.log(JSON.stringify(packageApi, null, 2));
 })();
 ```