fix example galleries in documentation (#6701)

* exclude sphinx-gallery==0.11.0

* fix CSS

* Update docs/requirements.txt

docs/requirements.txt

 matplotlib
 numpy
 sphinx-copybutton>=0.3.1
-sphinx-gallery>=0.9.0
+sphinx-gallery>=0.11.1
 sphinx==5.0.0
 tabulate
 -e git+https://github.com/pytorch/pytorch_sphinx_theme.git#egg=pytorch_sphinx_theme

docs/source/_static/css/custom_torchvision.css

@@ -21,3 +21,15 @@ article.pytorch-article .reference.download.internal, article.pytorch-article .s
 .table-weights p {
     margin-bottom: 0.2rem !important;
 }
+
+/* Fix for Sphinx gallery 0.11
+See https://github.com/sphinx-gallery/sphinx-gallery/issues/990
+*/
+article.pytorch-article .sphx-glr-thumbnails .sphx-glr-thumbcontainer {
+    width: unset;
+    margin-right: 0;
+    margin-left: 0;
+}
+article.pytorch-article div.section div.wy-table-responsive tbody td {
+    width: 50%;
+}