docs: Fix argparse chapter

Missing a label.

Oops.

[ci skip]
This commit is contained in:
Fabian Homborg 2020-10-08 17:34:02 +02:00
parent 6859ca2405
commit 0eeaa796fd

View File

@ -127,6 +127,8 @@ For example::
This isn't specific to argparse but common to all things using ``getopt(3)`` (if they have optional arguments at all). That ``grep`` example is how GNU grep actually behaves.
.. _flag-value-validation:
Flag Value Validation
---------------------