small typo fix (#5693)

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pwygab 2022-06-01 10:24:16 +08:00 committed by GitHub
parent ee8a0c9477
commit b79abdb2a5
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@ -208,7 +208,7 @@ impl Signature {
self self
} }
/// Add a required positional argument to the signature /// Add an optional positional argument to the signature
pub fn optional( pub fn optional(
mut self, mut self,
name: impl Into<String>, name: impl Into<String>,