Add protocol version 12 bump to changelog entry (#7724)

* add item for protocol v12 bump

* fix keypath item

CHANGELOG.md

@@ -227,6 +227,7 @@
 * Added `App::default_base_url()` static accessor for SDKs to retrieve the default base URL from Core. ([PR #7534](https://github.com/realm/realm-core/pull/7534))
 * Realm2JSON tool will now correctly upgrade file to current fileformat.
 * (bindgen) Remove dependency on the `clang-format` package and rely on a binary provided by the system instead.
+* Protocol version bumped to 12 ([#7124](https://github.com/realm/realm-core/issues/7124))
 
 ----------------------------------------------
 
@@ -368,7 +369,7 @@
 # 14.0.0 Release notes
 
 ### Enhancements
-* Property keypath in RQL can be substituted with value given as argument. Use '$P<i>' in query string. (Issue [#7033](https://github.com/realm/realm-core/issues/7033))
+* Property keypath in RQL can be substituted with value given as argument. Use '$K\<i\>' in query string. (Issue [#7033](https://github.com/realm/realm-core/issues/7033))
 * You can now use query substitution for the @type argument ([#7289](https://github.com/realm/realm-core/issues/7289))
 
 ### Fixed