test: fixed output filenames

Author: singerla

__tests__/modify-exisiting-shape.test.ts

@@ -14,7 +14,7 @@ test("create presentation, add slide with shapes from template and modify existi
     .addSlide('shapes', 2, (slide) => {
       slide.modifyElement('Drum', [modify.setPosition({x: 1000000, h:5000000, w:5000000})])
     })
-    .write(`create-presentation-modify-existing-shape.test.pptx`)
+    .write(`modify-existing-shape.test.pptx`)
 
   expect(result.slides).toBe(2)
 })

__tests__/modify-shapes.test.ts

@@ -17,7 +17,7 @@ test('create presentation, add some elements and modify content', async () => {
       slide.addElement('shapes', 2, 'Arrow', modify.setText('my text'));
       slide.addElement('shapes', 2, 'Drum');
     })
-    .write(`create-presentation-modify-shapes.test.pptx`);
+    .write(`modify-shapes.test.pptx`);
 
   expect(result.slides).toBe(2);
 });