Update documentation

[zhammer]

hmux/help_doc_gen.py

Line 17 in f1b512e

"""Extract all lines in an iterable of tmux config lines that are help key bindings and return

In:

def extract_help_bindings(tmux_conf_lines):
    """Extract all lines in an iterable of tmux config lines that are help key bindings and return
    them as a list of HelpBinding namedtuples."""

Switch to:

def extract_help_bindings(tmux_conf_lines):
    """Extract all lines that are help key bindings in an iterable of tmux config lines and return
    them as a list of HelpBinding namedtuples."""

[zhammer]

Also:

hmux/help_doc_gen.py

Line 23 in f1b512e

"""Sort a list of help bindings alphabetically by key."""

s/of help bindings/ of HelpBinding namedtuples/

[zhammer]

Either add module docstring or docstring to main() function