chore: fix mistype

Author: Vladimir Puzakov

.github/workflows/tests-and-linters.yml

@@ -18,7 +18,7 @@ jobs:
       - run: pip install tox
       - run: tox
         env:
-          TOXENV: pypi
+          TOXENV: pypy
 
   test-on-different-versions:
     name: Run tests