packaging: Properly flag universal wheel

I'm not sure we've *ever* done this properly; see the PyPA docs:
https://packaging.python.org/guides/distributing-packages-using-setuptools/#universal-wheels

Change-Id: I8bb9e05f386076aa652b3955f0abf757d229afed

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.cfg b/setup.cfg
index 5653bf3..bcb4d22 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -51,7 +51,7 @@ all_files = 1
 [upload_sphinx]
 upload-dir = doc/build/html
 
-[wheel]
+[bdist_wheel]
 universal = 1
 
 [pbr]