Fixup rustdoc for validate_service_type macro
@@ -22,7 +22,7 @@ use crate::error::InvalidArgumentError;
/// Defines the validation rules for a given service type.
///
-/// This is a macro, due to the due to the inability to use different error types (panic vs
+/// This is a macro, due to the inability to use different error types (panic vs
/// InvalidArgumentError) in the const function vs the heap function.
macro_rules! validate_service_type {
($service_type:ident, $err_macro:ident) => {
