Add ResNet pre-trained models to the docs (#256)

* Add ResNet pre-trained models to the docs

* Fix missing reference link

* ResNet is not documented, nothing to link to

docs/api/models.rst

@@ -31,3 +31,8 @@ Random-convolutional feature (RCF) extractor
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 .. autoclass:: RCF
+
+Residual Network (ResNet)
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. autofunction:: resnet50

docs/conf.py

@@ -59,6 +59,8 @@ nitpick_ignore = [
     ("py:class", ".."),
     # TODO: can't figure out why this isn't found
     ("py:class", "LightningDataModule"),
+    # Undocumented class
+    ("py:class", "torchvision.models.resnet.ResNet"),
 ]