Fix bucket path

Author: Forest Hoffman

test/src/index.ts

@@ -158,7 +158,7 @@ export class TestPage {
 		// If this is a Travis CI build, store the screenshots.
 		if (process.env.CI_JOB_ID) {
 			const makePublic = true;
-			const bucketPath = `Travis-${process.env.CI_JOB_ID}/${fileName}`;
+			const bucketPath = `/Travis-${process.env.CI_JOB_ID}/${fileName}`;
 			let buf: Buffer = typeof img === "string" ? Buffer.from(img as string) : img;
 			try {
 				const url = await bucket.write(bucketPath, buf, makePublic);