Small error in documentation

[Davilink]

I'm not sure if i'm right or wrong, so that why i didn't create a PR, but i thing there a small error here

Figment/src/providers/env.rs

Lines 243 to 254 in c730bdf

	/// Jail::expect_with(|jail| {
	/// jail.set_env("FOO_FOO", 100);
	/// jail.set_env("BAR_FOO", "hi");
	/// jail.set_env("foobar", "hi");
	///
	/// // This is like `prefixed("foo_")` without the filtering.
	/// let env = Env::raw().map(|k| match k.starts_with("foo_") {
	/// true => k["foo_".len()..].into(),
	/// false => k.into()
	/// });
	///
	/// // We now have `FOO=100`, `BAR_FOO=hi`, and `bar=hi`.

I think we should see this at the line 254

// We now have `FOO=100`, `BAR_FOO=hi`, and `foobar=hi`. 

the map in the documentation is looking for something that start with foo_, not just foo

[SergioBenitez]

Good catch! I think I meant to have foo_bar as an original env var here. Fixing now.