Add other styles to fixup_header.py

import re

import argparse

index_pattern = re.compile(r"^.. index:: (fix|pair_style)\s+([a-zA-Z0-9/_]+)$")

pattern = re.compile(r"^(fix|pair_style)\s+([a-zA-Z0-9/_]+)\s+command$")

index_pattern = re.compile(r"^.. index:: (compute|fix|pair_style|angle_style|bond_style|dihedral_style|improper_style)\s+([a-zA-Z0-9/_]+)$")

pattern = re.compile(r"^(compute|fix|pair_style|angle_style|bond_style|dihedral_style|improper_style)\s+([a-zA-Z0-9/_]+)\s+command$")

parser = argparse.ArgumentParser(description='Fixup headers in docs')

parser.add_argument('files', metavar='FILE', nargs='+', help='files to fix')