Update .gitattributes whitespaces
site-packages/* linguist-vendored linguist-generated
-"Pyto Mac/PyObjC/*" linguist-vendored linguist-generated
-"Pyto Mac/pip/*" linguist-vendored linguist-generated
+"Pyto[[:space:]]Mac/PyObjC/*" linguist-vendored linguist-generated
+"Pyto[[:space:]]Mac/pip/*" linguist-vendored linguist-generated
libpng/* linguist-vendored linguist-generated
*.pbxproj merge=union
