Rollup merge of rust-lang#100345 - vincenzopalazzo:macros/is_number_d…

…oc, r=joshtriplett

docs: remove repetition in `is_numeric` function docs

In rust-lang#99628 we introduce new docs for the `is_numeric` function, and this is a follow-up PR that removes some unnecessary repetition that may be introduced by some rebasing.

`@rustbot` r? `@joshtriplett`

library/core/src/char/methods.rs

@@ -892,8 +892,7 @@ impl char {
  ///
  /// The general categories for numbers (`Nd` for decimal digits, `Nl` for letter-like numeric
  /// characters, and `No` for other numeric characters) are specified in the [Unicode Character
- /// Database][ucd] [`UnicodeData.txt`]. Note that this means ideographic numbers like '三'
- /// are considered alphabetic, not numeric. Please consider to use `is_ascii_digit` or `is_digit`.
+ /// Database][ucd] [`UnicodeData.txt`].
  ///
  /// This method doesn't cover everything that could be considered a number, e.g. ideographic numbers like '三'.
  /// If you want everything including characters with overlapping purposes then you might want to use