Fix deployment to PyPI

Signed-off-by: Robert Winkler <rwinkler@antmicro.com>

Author: rw1nkler

.travis.yml

@@ -51,7 +51,7 @@ jobs:
       before_install: null
       before_deploy:
         - make clean
-        - make sphinxcontrib_verilog_diagrams/version.py
+        - make sphinxcontrib_hdl_diagrams/version.py
         - sudo ln -sf /usr/bin/python3 /usr/bin/python
       deploy:
         provider: pypi