Add link for PR 22066 in mypy 2.4 changelog (#22082)

Minor fix

(cherry picked from commit 05e50c09918549e86b379684dcf27cfd35f880f2)
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fca7682..60e37a5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -77,7 +77,7 @@
 
 - Make the native parser the default (Ivan Levkivskyi, PR [21823](https://github.com/python/mypy/pull/21823))
 - Fix native parser crash caused by invalid assignment expression (Jukka Lehtosalo, PR [21882](https://github.com/python/mypy/pull/21882))
-- Fix native parser crashes on non-UTF-8 encoded source files (Ivan Levkivskyi, PR 22066)
+- Fix native parser crashes on non-UTF-8 encoded source files (Ivan Levkivskyi, PR [22066](https://github.com/python/mypy/pull/22066))
 - Match native parser behavior for positional-only arguments (Ivan Levkivskyi, PR [21891](https://github.com/python/mypy/pull/21891))
 - Preserve docstrings in the native parser (Ivan Levkivskyi, PR [21890](https://github.com/python/mypy/pull/21890))
 - Use the native parser for `parse_type_string()` (Ivan Levkivskyi, PR [21965](https://github.com/python/mypy/pull/21965))