fix get_steam_id()

[makarworld]

Test case:

import re

# fixed
def search_get_steam_id() -> int:
    text = '    g_steamID = "76561198085278322";'
    steam_id = re.search(r'g_steamID = "(\d+)";', text)
    if steam_id:
        return int(steam_id.group(1))
    else:
        raise ValueError('Invalid steam_id: {}'.format(steam_id))

# not fixed
def match_get_steam_id() -> int:
    text = '    g_steamID = "76561198085278322";'
    steam_id = re.match(r'g_steamID = "(\d+)";', text)
    if steam_id:
        return int(steam_id.group(1))
    else:
        raise ValueError('Invalid steam_id: {}'.format(steam_id))

print(search_get_steam_id())
# 76561198085278322
print(match_get_steam_id())
# ValueError: Invalid steam_id: None