fix: 🐛 bug with error on existing directory

Was throwing error if directory already exists. Update the existsSync
function to check the directory path, not the file path, so new files
can be written to an existing directory and if it doesn't exist, it will
be created

index.ts

@@ -30,13 +30,14 @@ export default function createPage(answers: Answers) {
 
 	const [, , ...args] = process.argv;
 
+	const outputDirectory: string = join(process.cwd(), args[0]);
+
 	const outputPath: string = join(
-		process.cwd(),
-		args[0],
+		outputDirectory,
 		`${outputName}.${extension}`,
 	);
 
-	if (existsSync(outputPath)) {
+	if (existsSync(outputDirectory)) {
 		writeFileSync(outputPath, fileContent);
 	} else {
 		mkdirSync(join(process.cwd(), args[0]));