python: update help text for check-tox

Move it up near the check-pipenv help text, and update it to suggest parity.

(At the time I first added it, I wasn't sure if I would be keeping it,
but I've come to appreciate it as it has actually helped uncover bugs I
would not have noticed without it. It should stay.)

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-id: 20210629214323.1329806-9-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>

python/Makefile

@@ -9,13 +9,17 @@ help:
 	@echo "    Requires: Python 3.6 and pipenv."
 	@echo "    Hint (Fedora): 'sudo dnf install python3.6 pipenv'"
 	@echo ""
+	@echo "make check-tox:"
+	@echo "    Run tests against multiple python versions."
+	@echo "    These tests use the newest dependencies."
+	@echo "    Requires: Python 3.6 - 3.10, and tox."
+	@echo "    Hint (Fedora): 'sudo dnf install python3-tox python3.10'"
+	@echo ""
 	@echo "make develop:    Install deps for 'make check', and"
 	@echo "                 the qemu libs in editable/development mode."
 	@echo ""
 	@echo "make check:      run linters using the current environment."
 	@echo ""
-	@echo "make check-tox:  run linters using multiple python versions."
-	@echo ""
 	@echo "make pipenv"
 	@echo "    Creates pipenv's virtual environment (.venv)"
 	@echo ""