Missing sample when loading csv file (#1708)

When reading a file with the ``read_csv`` method, by default the first line of the file is assumed to contain header information. In the example file mentioned in the tutorial, the first line contains data and if the ``names`` attribute of the ``read_csv`` method is not informed, the first line will be considered as a header. This way, when loading the dataset the first sample will be lost.

Co-authored-by: Holly Sweeney <77758406+holly1238@users.noreply.github.com>

Author: andersonsantos3

beginner_source/basics/data_tutorial.py

@@ -160,7 +160,7 @@ def __getitem__(self, idx):
 
 
 def __init__(self, annotations_file, img_dir, transform=None, target_transform=None):
-    self.img_labels = pd.read_csv(annotations_file)
+    self.img_labels = pd.read_csv(annotations_file, names=['file_name', 'label'])
     self.img_dir = img_dir
     self.transform = transform
     self.target_transform = target_transform