Update docs to reflect removal of setup.py

Replace `python setup.py sdist bdist_wheel` with `python -m build`
and update the editable install URL to use https and modern pip syntax.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: derek73

CONTRIBUTING.md

@@ -38,5 +38,5 @@ Unless you add better coverage someplace else, add a few examples of your names
 New Releases
 ------------
 
-    $ python setup.py sdist bdist_wheel
+    $ python -m build
     $ twine upload dist/*

README.rst

@@ -49,7 +49,7 @@ Installation
 If you want to try out the latest code from GitHub you can
 install with pip using the command below.
 
-``pip install -e git+git://github.com/derek73/python-nameparser.git#egg=nameparser``
+``pip install -e git+https://github.com/derek73/python-nameparser.git``
 
 If you need to handle lists of names, check out
 `namesparser <https://github.com/gwu-libraries/namesparser>`_, a