Fix typo missed by codespell: ambigiouties -> ambiguities

Co-Authored-By: Claude Code 2.1.81 / Claude Opus 4.6 <noreply@anthropic.com>

Author: yarikoptic

src/pyfuse3/_pyfuse3.py

@@ -275,7 +275,7 @@ async def rmdir(self, parent_inode: InodeT, name: FileNameT, ctx: "RequestContex
 
         (Since hard links to directories are not allowed by POSIX, this method
         is not required to check if there are still other directory entries
-        referring to the same inode. This conveniently avoids the ambigiouties
+        referring to the same inode. This conveniently avoids the ambiguities
         associated with the ``.`` and ``..`` entries).
         '''