docs: add sphinx reredirects extension (#3962)

Signed-off-by: Anant Sharma <anants@nvidia.com>

docs/conf.py

@@ -30,6 +30,7 @@ extensions = [
     "sphinx.ext.ifconfig",
     "sphinx.ext.extlinks",
     "sphinxcontrib.mermaid",
+    "sphinx_reredirects",
 ]
 
 # Custom extensions

pyproject.toml

@@ -79,6 +79,7 @@ docs = [
     "sphinx-book-theme>=1.1",
     "sphinxcontrib-mermaid>=1.0",
     "sphinxcontrib-bibtex>=2.6",
+    "sphinx-reredirects>=1.0.0",
     # Markdown and notebook support
     "myst-parser>=4.0",
     "myst-nb>=1.2",