update CHANGELOG.md entry to point to the appropriate section in docs/user/Interoperability.md

Author: cosminbasca

CHANGELOG.md

@@ -15,7 +15,7 @@ language runtime. The main focus is on user-observable behavior of the engine.
 * Raise `KeyboardInterrupt` exception when the process is interrupted. Enabled only when using the launcher.
 * Add option `python.InitialLocale` to change the default locale. If not set, then Java Locale#getDefault is used.
 * `multiprocessing` module now uses the `spawn` method (creates new processes) by default. The formerly default method that uses threads and multiple Truffle contexts can be selected using `multiprocessing.set_start_method('graalpy')`.
-* `polyglot` module: add ability to redefine Truffle host interop supported messages for external / user defined types. 
+* `polyglot` module: add API to redefine Truffle interop messages for external / user defined types. For more details see [The Truffle Interoperability Extension API](docs/user/Interoperability.md).
 
 ## Version 23.1.0
 * Oracle GraalPy distributions (previously known as GraalPy Enterprise) are now available under the [GFTC license](https://www.oracle.com/downloads/licenses/graal-free-license.html). The community builds published on Github have been renamed to `graalpy-community-<version>-<os>-<arch>.tar.gz`.

docs/user/Interoperability.md

@@ -260,7 +260,7 @@ Types not listed in the below table have no special interpretation in Python rig
 | Executable   | Anything with a `__call__` method.                                                                                                |
 | Instantiable | Any Python `type`.                                                                                                                |
 
-## The interoperability extension mechanism
+## The Truffle Interoperability Extension API
 
 It is possible to extend the Truffle Interoperability protocol directly from python via a simple API defined in the `polyglot` module. 
 The purpose of this API is to allow custom / user defined types to take part in the interop ecosystem.