fix(log): fix typo in log macro accessing non-existent 'access' key

[pecastro]

Inside the 'log' macro, the template iterates over log['access'] entries using '{% for log in log['access'] %}'. Within this loop, each 'log' is an individual access log entry dict with keys: path, format, buffer, gzip, flush, if.

The gzip conditional on line 193 (http) / line 65 (stream) contained a typo: it accessed log['access']['gzip'] instead of log['gzip']. Since entry dicts have no 'access' key, this caused an UndefinedError in Jinja2 3.x (which no longer silently returns Undefined for missing dict keys).

Additionally, the condition only handled string values for gzip, but the defaults document gzip can be a number (e.g., 'gzip: 5'). The condition now also accepts numeric types.

Fixes: log['access']['gzip'] -> log['gzip']
Adds: (log['gzip'] is string or log['gzip'] is number)

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