Correct README.md (#138)

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Co-authored-by: Jeong, YunWon <69878+youknowone@users.noreply.github.com>

Author: verhovsky

README.md

@@ -1,6 +1,6 @@
 # RustPython parser as a library
 
-This project is forked from [RustPython][RustPython] project. The parser is one of the core part of [RustPython] and [Ruff] project.
+This project is forked from [RustPython][RustPython] project. The parser was one of the core parts of [RustPython] and the [Ruff] project. Now it is superseded by https://github.com/astral-sh/ruff/tree/v0.4.10/crates/ruff_python_parser
 
 We try to keep these crates as a well-packaged library for more potential users.