Actually fix the formatter error

Author: Hopding

tests/api/PDFImage.spec.ts

@@ -41,8 +41,8 @@ describe(`PDFImage`, () => {
       const ref = pdfDoc.context.nextRef();
       const pdfImage = PDFImage.of(ref, pdfDoc, embedder);
 
-      // prettier-ignore
-      const task = () => pdfImage['embedTask']
+      // tslint:disable-next-line
+      const task = () => pdfImage['embedTask'];
 
       expect(task()).toBeUndefined();