Fix typos in tv tutorial (pytorch#1357)

Co-authored-by: holly1238 <[email protected]>

Author: SeanChao

_static/torchvision_finetuning_instance_segmentation.ipynb

@@ -1448,7 +1448,7 @@
         "        self.masks = list(sorted(os.listdir(os.path.join(root, \"PedMasks\"))))\n",
         "\n",
         "    def __getitem__(self, idx):\n",
-        "        # load images ad masks\n",
+        "        # load images and masks\n",
         "        img_path = os.path.join(self.root, \"PNGImages\", self.imgs[idx])\n",
         "        mask_path = os.path.join(self.root, \"PedMasks\", self.masks[idx])\n",
         "        img = Image.open(img_path).convert(\"RGB\")\n",

_static/tv-training-code.py

@@ -25,7 +25,7 @@ def __init__(self, root, transforms):
         self.masks = list(sorted(os.listdir(os.path.join(root, "PedMasks"))))
 
     def __getitem__(self, idx):
-        # load images ad masks
+        # load images and masks
         img_path = os.path.join(self.root, "PNGImages", self.imgs[idx])
         mask_path = os.path.join(self.root, "PedMasks", self.masks[idx])
         img = Image.open(img_path).convert("RGB")

intermediate_source/torchvision_tutorial.rst

@@ -122,7 +122,7 @@ Let’s write a ``torch.utils.data.Dataset`` class for this dataset.
            self.masks = list(sorted(os.listdir(os.path.join(root, "PedMasks"))))
 
        def __getitem__(self, idx):
-           # load images ad masks
+           # load images and masks
            img_path = os.path.join(self.root, "PNGImages", self.imgs[idx])
            mask_path = os.path.join(self.root, "PedMasks", self.masks[idx])
            img = Image.open(img_path).convert("RGB")