Revert "docs: update the coverage extlink"

This reverts commit 96a84bd.

Author: 56kyle

docs/conf.py

@@ -66,7 +66,8 @@
     "black": ("https://black.readthedocs.io/%s", None),
     "build": ("https://pypa-build.readthedocs.io/%s", None),
     "commitizen": ("https://commitizen-tools.github.io/commitizen/%s", None),
-    "coverage.py": ("https://coverage.readthedocs.io/%s", None),
+    "coveragepy-coverage": ("https://coverage.readthedocs.io/%s", None),
+    "coveragepy": ("https://github.com/nedbat/coveragepy/%s", None),
     "cruft": ("https://cruft.github.io/cruft/%s", None),
     "docker-compose": ("https://docs.docker.com/compose/%s", None),
     "docker": ("https://docs.docker.com/%s", None),