doc: fix typo on select macro
///
/// The complete lifecycle of a `select!` expression is as follows:
///
-/// 1. Evaluate all provded `<precondition>` expressions. If the precondition
+/// 1. Evaluate all provided `<precondition>` expressions. If the precondition
/// returns `false`, disable the branch for the remainder of the current call
/// to `select!`. Re-entering `select!` due to a loop clears the "disabled"
/// state.
