Update changelog for 1.19.3, to mention C_Cpp.experimentalFeatures (#11946)

Author: Colengms

Extension/CHANGELOG.md

@@ -3,7 +3,9 @@
 ## Version 1.19.3: February 12, 2024
 ### Enhancements
  * Enable support for fuzzy symbol seaches. [#2751](https://github.com/microsoft/vscode-cpptools/issues/2751)
+   * This may not be enabled for all users unless `C_Cpp.experimentalFeatures` is `enabled`.
  * Improve performance of symbol searches. [#7908](https://github.com/microsoft/vscode-cpptools/issues/7908), [#7914](https://github.com/microsoft/vscode-cpptools/issues/7914), [#11557](https://github.com/microsoft/vscode-cpptools/issues/11557)
+   * This may not be enabled for all users unless `C_Cpp.experimentalFeatures` is `enabled`.
  * Change the default setting value for `C_Cpp.intelliSenseUpdateDelay` from 2s to 1s. [#11932](https://github.com/microsoft/vscode-cpptools/pull/11932)
 
 ### Bug Fixes
@@ -278,7 +280,7 @@
 ### New Features
 * Add recursive macro expansion on hover. [#3579](https://github.com/microsoft/vscode-cpptools/issues/3579)
 * Move status bar items to the language status UI. [#8405](https://github.com/microsoft/vscode-cpptools/issues/8405)
-  * This may not be enabled for all users unless `C_Cpp.experimentalFeatures` is `true`.
+  * This may not be enabled for all users unless `C_Cpp.experimentalFeatures` is `enabled`.
 * Add the 'Select Default Compiler' command that lets you choose a default compiler to configure IntelliSense. [#10027](https://github.com/microsoft/vscode-cpptools/issues/10027)
 
 ### Enhancements