Rename Python 3 markdown files into 'python'

```
for f in $(find . -iname "*python3*" | grep -vE 'git'); do
  fnew=$(echo "$f" | sed 's/python3/python/')
  git mv "$f" "$fnew"
done

1 files changed, 0 insertions, 0 deletions

diff --git a/vi-vn/python3-vi.html.markdown b/vi-vn/python-vi.html.markdown
index f6cce1a3..f6cce1a3 100644
--- a/vi-vn/python3-vi.html.markdown
+++ b/vi-vn/python-vi.html.markdown