fix(iterators2): Update description (#578)
grammar fix in the description
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// iterators2.rs
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// iterators2.rs
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// In this module, you'll learn some of unique advantages that iterators can offer.
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// In this module, you'll learn some of the unique advantages that iterators can offer.
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// Step 1. Complete the `capitalize_first` function to pass the first two cases.
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// Step 1. Complete the `capitalize_first` function to pass the first two cases.
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// Step 2. Apply the `capitalize_first` function to a vector of strings.
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// Step 2. Apply the `capitalize_first` function to a vector of strings.
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// Ensure that it returns a vector of strings as well.
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// Ensure that it returns a vector of strings as well.
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