Update python-rpm-macros specfile comments

epel-rpm-macros.spec

@@ -34,9 +34,12 @@ Requires:       python-srpm-macros
 # Since the RHEL python-devel package doesn't require them, bring them in here
 Requires:       python-rpm-macros
 Requires:       python2-rpm-macros
-# Make sure EPEL8's Python 3 packages use /usr/bin/python3.6 or python3.8
-#   instead of /usr/libexec/platform-python
+# Make sure EPEL8's Python 3 packages use /usr/bin/python3.{6,8,9} instead of /usr/libexec/platform-python.
+# This will install the python3X-rpm-macros version corresponding to the python3X-devel version installed.
+# If multiple versions are installed together, it will prefer python36-rpm-macros, the default Python version.
 Requires:       (python-modular-rpm-macros if (python36-devel or python38-devel or python39-devel))
+# We use weak dependencies here in order to avoid creating conflicts between
+# the different python3X-devel packages.
 Recommends:     (python36-rpm-macros if python36-devel)
 Suggests:       (python38-rpm-macros if python38-devel)
 Suggests:       (python39-rpm-macros if python39-devel)