Fix Logger config

[jim-parry]

Correct the Config/Logger

• remove second path setting
• change default extension to 'log'
• improve PHPdocs
  Closes Bug: Logger Path Duplicated #2286

[MGatner]

I like it. How about https://github.com/codeigniter4/CodeIgniter4/blob/develop/system/Log/Handlers/FileHandler.php#L82 also?

[jim-parry]

I left tht because the docs say the default extension is "php".
All the "php" extension does is inject a DEFINED||exit scriptlet at the beginning of the log file.
This at least protects the developer who foolishy sticks their log folder somewhere accessible.

Alternate: make "log" the default logfile extension, and change the description in Config/Logger to explain the effect of "php"

[lonnieezell]

I'm good with making the default extension .log, honestly.

[MGatner]

I think it should be consistent with the Config file, for testing and for odd times when it comes up in testing, etc.

[jim-parry]

Should be consistent now

[jim-parry]

ohoh - I broke something. WIll return to this later this morning