Fix PyPI publish action

Author: erogol

.github/workflows/pypi-release.yml

@@ -16,7 +16,7 @@ jobs:
           set -ex
           version=$(cat trainer/VERSION)
           tag="${GITHUB_REF/refs\/tags\/}"
-          if [[ "v$version" != "$tag" ]]; then
+          if [[ "$version" != "$tag" ]]; then
             exit 1
           fi
       - uses: actions/setup-python@v2