Replacing literal 'build' with buildFolder variable

Author: Jonathan Felchlin

packages/react-dev-utils/printHostingInstructions.js

@@ -35,7 +35,9 @@ function printHostingInstructions(
       )} field in your ${chalk.cyan('package.json')}.`
     );
     console.log();
-    console.log(`The ${chalk.cyan('build')} folder is ready to be deployed.`);
+    console.log(
+      `The ${chalk.cyan(buildFolder)} folder is ready to be deployed.`
+    );
     console.log(`To publish it at ${chalk.green(publicUrl)}, run:`);
     // If script deploy has been added to package.json, skip the instructions
     if (typeof appPackage.scripts.deploy === 'undefined') {
@@ -83,7 +85,9 @@ function printHostingInstructions(
       )} field in your ${chalk.cyan('package.json')}.`
     );
     console.log();
-    console.log(`The ${chalk.cyan('build')} folder is ready to be deployed.`);
+    console.log(
+      `The ${chalk.cyan(buildFolder)} folder is ready to be deployed.`
+    );
     console.log();
   } else {
     if (publicUrl) {