Emphasize permitted version format for publication

The patch adds mention in README that local version identifiers don’t allow
publishing to PyPI/TestPyPI. Also, it suggests local private index (devpi)
if required to use the local component in versions.

Resolves pypa#322

Co-authored-by: Sviatoslav Sydorenko <webknjaz+github/profile@redhat.com>

README.rst

@@ -292,6 +292,15 @@ the tag.
 For Git projects, the version relies on `git describe <https://git-scm.com/docs/git-describe>`_,
 so you will see an additional ``g`` prepended to the ``{revision hash}``.
 
+.. note::
+
+    Please remember that if the version includes a local component, it cannot be published
+    to public package indexes (e.g. PyPI/TestPyPI). These cases (usage of the non-releases)
+    might arise due to auto-publishing versions or by mistake. 
+
+    Specific local private indexes, such as ``devpi``, permit local version identifiers, which
+    comply with `PEP 440 <https://peps.python.org/pep-0440/#local-version-identifiers>`_.
+    If deemed necessary, make use of them.
 
 Semantic Versioning (SemVer)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~