Update CHANGELOG.md

Author: jonatanklosko

CHANGELOG.md

@@ -8,7 +8,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Added
 
-* Support for ~SQL sigils in the built-in injections ([#83](https://github.com/elixir-lang/tree-sitter-elixir/pull/83))
+* Support for ~SQL sigils in the built-in injections ([#84](https://github.com/elixir-lang/tree-sitter-elixir/pull/84))
 
 ## [v0.3.4](https://github.com/elixir-lang/tree-sitter-elixir/tree/v0.3.4) (2025-02-06)