Mention Prism is twice as fast in CHANGELOG

Author: eregon

CHANGELOG.md

@@ -3,7 +3,7 @@
 New features:
 
 * C/C++ extensions are now compiled using the system toolchain and executed natively instead of using GraalVM LLVM (Sulong). This leads to faster startup, no warmup, better compatibility, smaller distribution and faster installation for C/C++ extensions (#3118, @eregon).
-* Full suport for the Ruby 3.2 and Ruby 3.3 syntax by adopting the [Prism](https://github.com/ruby/prism) parser (#3117, #3038, #3039, @andrykonchin, @eregon).
+* Full suport for the Ruby 3.2 and Ruby 3.3 syntax by adopting the [Prism](https://github.com/ruby/prism) parser, which is about twice as fast as the old parser (#3117, #3038, #3039, @andrykonchin, @eregon).
 * Pattern matching is now fully supported, with the exception of Find pattern (`in [*, a, *]`) (#3332, #2683, @eregon, @razetime).
 
 Bug fixes: