CXX-3312 Fix export macro for mongocxx::v_noabi::options::index::storage_engine (#1426)

Author: eramongodb

CHANGELOG.md

@@ -12,6 +12,7 @@ Changes prior to 3.9.0 are documented as [release notes on GitHub](https://githu
 ### Fixed
 
 - CMake option `ENABLE_TESTS` (`OFF` by default) is no longer overwritten by the auto-downloaded C Driver (`ON` by default) during CMake configuration.
+- `storage_engine() const` in `mongocxx::v_noabi::options::index` is correctly exported using mongocxx export macros instead of bsoncxx export macros.
 
 ### Changed
 

src/mongocxx/include/mongocxx/v_noabi/mongocxx/options/index.hpp

@@ -303,7 +303,7 @@ class index {
     ///
     /// The current storage engine options.
     ///
-    BSONCXX_ABI_EXPORT_CDECL(bsoncxx::v_noabi::stdx::optional<bsoncxx::v_noabi::document::view> const&)
+    MONGOCXX_ABI_EXPORT_CDECL(bsoncxx::v_noabi::stdx::optional<bsoncxx::v_noabi::document::view> const&)
     storage_engine() const;
 
     ///