add fuzz show_log docs

[Azleal]

updated docs related to foundry-rs/foundry#8387

[Azleal]

hi @grandizzy @mattsse , I'm not sure where this Environment come from. So I left it blank for show_logs. please tell me if Environment should be here.

book/src/reference/config/testing.md

Lines 373 to 377 in 59b6071

	##### `include_push_bytes`
	- Type: boolean
	- Default: true
	- Environment: `FOUNDRY_FUZZ_INCLUDE_PUSH_BYTES`

[grandizzy]

hi @grandizzy @mattsse , I'm not sure where this Environment come from. So I left it blank for show_logs. please tell me if Environment should be here.

book/src/reference/config/testing.md

Lines 373 to 377 in 59b6071

	##### `include_push_bytes`
	- Type: boolean
	- Default: true
	- Environment: `FOUNDRY_FUZZ_INCLUDE_PUSH_BYTES`

Configs within profile can be passed as env vars, for example you can test that new one works if FOUNDRY_FUZZ_SHOW_LOGS=true

[Azleal]

Configs within profile can be passed as env vars, for example you can test that new one works if FOUNDRY_FUZZ_SHOW_LOGS=true

yeah. i tried FOUNDRY_FUZZ_SHOW_LOGS=true forge test --vv, it worked as expected. and I updated the docs.

[Azleal]

hi @mattsse , could you please review this PR to see if it could be merged.