Migrate to Node.findall() from Node.traverse()

Node.traverse() was marked as deprecated since docutils-0.18.  Instead
of it, Node.findall() has been added as successor of traverse().

This applies a patch to docutils-0.17 or older to be available
Node.findall() and use it.

1 files changed, 1 insertions, 1 deletions

diff --git a/sphinx/builders/html/transforms.py b/sphinx/builders/html/transforms.py
index 8c50ce0c4..ea1d69d12 100644
--- a/sphinx/builders/html/transforms.py
+++ b/sphinx/builders/html/transforms.py
@@ -48,7 +48,7 @@ class KeyboardTransform(SphinxPostTransform):
 
     def run(self, **kwargs: Any) -> None:
         matcher = NodeMatcher(nodes.literal, classes=["kbd"])
-        for node in self.document.traverse(matcher):  # type: nodes.literal
+        for node in self.document.findall(matcher):  # type: nodes.literal
             parts = self.pattern.split(node[-1].astext())
             if len(parts) == 1 or self.is_multiwords_key(parts):
                 continue