Step 1 already done in iterators2.rs

[FabienTregan]

This might be related to #359, but iterators2.rs says:

rustlings/exercises/standard_library_types/iterators2.rs

Line 3 in cc5b9b7

// Step 1. Complete the `capitalize_first` function to pass the first two cases.

it seems that this is already the case:

rustlings/exercises/standard_library_types/iterators2.rs

Lines 12 to 18 in cc5b9b7

	pub fn capitalize_first(input: &str) -> String {
	let mut c = input.chars();
	match c.next() {
	None => String::new(),
	Some(first) => first.collect::<String>() + c.as_str(),
	}
	}

I don't know whether line 16 should be partially replaced with ??? or if step 1 needs to be removed.

[FabienTregan]

(sorry, closed, weird behaviour with my IDE integration telling me that the test passed when it did not, I'll investigate)