Merge ~jugmac00/launchpad:update-add-a-package-documentation into launchpad:master

[Jürgen Gmach]

Update "Add a Package" section as we use setup.cfg nowadays

[Jürgen Gmach (jugmac00)]

Colin has already provided a more complete update to the documentation in https://code.launchpad.net/~cjwatson/launchpad/+git/launchpad/+merge/411453

Unmerged commits

00590df... by Jürgen Gmach on 2021-11-05

Update "Add a Package" section as we use setup.cfg nowadays

diff --git a/doc/pip.txt b/doc/pip.txt
index 5726e2e..6ebb35f 100644
--- a/doc/pip.txt
+++ b/doc/pip.txt
@@ -184,7 +184,7 @@ Add a Package
 
 Let's suppose that we want to add the "lazr.foo" package as a dependency.
 
-1.  Add the new package to the ``setup.py`` file in the ``install_requires``
+1.  Add the new package to the ``setup.cfg`` file in the ``install_requires``
     list.
 
     Generally, our policy is to only set minimum version numbers in this