Updated status of raw_identifiers feature

Author: Alexander Regueiro

src/unstable-feature-status.md

@@ -37,7 +37,7 @@
 | [Lifetime elision in `impl`s] | Unstable; [tracking issue][issue#44524] | 2015 |
 | Non-lexical lifetimes | [Implemented but not ready for preview][nll_status] | 2015 |
 | [`T: 'a` inference in `struct`s] | Unstable; [tracking issue][issue#44493] | 2015 |
-| [Raw identifiers] | Unstable; [tracking issue][issue#48589] | ? |
+| [Raw identifiers] | Shipping, 1.30; [tracking issue][issue#48589] | 2015 |
 | [Import macros via `use`] | Unstable; [tracking issue][issue#35896] | ? |
 | [Module system path changes] | Unstable; [tracking issue][issue#44660] | 2018 |