Fix disagreement between isort and black.

[johnnv1]

Occurs at #9

problem:

when running isort:

$ pre-commit run nbqa-isort -a
nbqa-isort...............................................................Failed
- hook id: nbqa-isort
- files were modified by this hook

Fixing /tmp/dl-tutorials/tutorials/Image Classification/HRNet/hrnet.ipynb
Fixing /tmp/dl-tutorials/tutorials/Image Classification/Fastai/resnet.ipynb

-    "from fastai.vision.all import (\n",
-    "    F1Score,\n",
-    "    ImageDataLoaders,\n",
-    "    Normalize,\n",
-    "    PILImage,\n",
-    "    Precision,\n",
-    "    Recall,\n",
-    "    SaveModelCallback,\n",
-    "    ShowGraphCallback,\n",
-    "    Transform,\n",
-    "    accuracy,\n",
-    "    get_image_files,\n",
-    "    get_learner,\n",
-    "    imagenet_stats,\n",
-    ")\n",
+    "from fastai.vision.all import (F1Score, ImageDataLoaders, Normalize, PILImage,\n",
+    "                               Precision, Recall, SaveModelCallback,\n",
+    "                               ShowGraphCallback, Transform, accuracy,\n",
+    "                               get_image_files, get_learner, imagenet_stats)\n",

when runs black:

$ pre-commit run nbqa-black -a
nbqa-black...............................................................Failed
- hook id: nbqa-black
- files were modified by this hook

reformatted tutorials/Image Classification/Fastai/resnet.ipynb
reformatted tutorials/Image Classification/HRNet/hrnet.ipynb

All done! ✨ 🍰 ✨
2 files reformatted, 5 files left unchanged.

-    "from fastai.vision.all import (F1Score, ImageDataLoaders, Normalize, PILImage,\n",
-    "                               Precision, Recall, SaveModelCallback,\n",
-    "                               ShowGraphCallback, Transform, accuracy,\n",
-    "                               get_image_files, get_learner, imagenet_stats)\n",
+    "from fastai.vision.all import (\n",
+    "    F1Score,\n",
+    "    ImageDataLoaders,\n",
+    "    Normalize,\n",
+    "    PILImage,\n",
+    "    Precision,\n",
+    "    Recall,\n",
+    "    SaveModelCallback,\n",
+    "    ShowGraphCallback,\n",
+    "    Transform,\n",
+    "    accuracy,\n",
+    "    get_image_files,\n",
+    "    get_learner,\n",
+    "    imagenet_stats,\n",
+    ")\n",

[johnnv1]

Fixed at #12