Fix the rapidjson include directory (#1435)

Rapidjson is not found when the custom directory is provided

Relates-To: OLPEDGE-2833

Signed-off-by: Mykhailo Kuchma <[email protected]>

Author: mykhailo-kuchma

olp-cpp-sdk-core/CMakeLists.txt

@@ -415,7 +415,7 @@ target_include_directories(${PROJECT_NAME} PUBLIC
     $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>
     $<BUILD_INTERFACE:${Boost_INCLUDE_DIR}>
 
-    $<BUILD_INTERFACE:${EXTERNAL_BINARY_INSTALL_DIR}/include>
+    $<BUILD_INTERFACE:${RapidJSON_INCLUDE_DIRS}/..>
 
     $<INSTALL_INTERFACE:include>)