Bring back PyPI reference

pradyunsg · pradyunsg · commit bc5e64899925 · 2021-09-22T06:56:24.000+01:00
diff --git a/docs/html/cli/pip_install.rst b/docs/html/cli/pip_install.rst
@@ -833,3 +833,5 @@ Examples
 
 .. [1] This is true with the exception that pip v7.0 and v7.0.1 required quotes
        around specifiers containing environment markers in requirement files.
+
+.. _PyPI: https://pypi.org/
