minor fix for conda release process

docs/release.rst

@@ -10,7 +10,7 @@ To release a new version of pybind11:
     - ``conda-build conda.recipe --output``
       This should ouput the path of the generated tar.bz2 for the package
     - ``conda-convert --platform all [path/to/tar.bz2] -o .``
-    - For each platform name, ``anaconda-upload ./platform/tarfile.tar.bz2``
+    - For each platform name, ``anaconda-upload -u pybind ./platform/tarfile.tar.bz2``
 - Get back to work
     - Update ``_version.py`` (add 'dev' and increment minor).
     - Update version macros in ``include/pybind11/common.h``