Update CMakeLists.txt - typo in variable expansion.

CMakeLists.txt

@@ -110,7 +110,7 @@ set(FGGL_CONFIG_PATH "${CMAKE_INSTALL_LIBDIR}/cmake/fggl")
 install(EXPORT "${PROJECT_NAME}Targets"
 	    FILE "${PROJECT_NAME}Targets.cmake"
 	    NAMESPACE ${namespace}::
-	    DESTINATION "{$FGGL_CONFIG_PATH}"
+	    DESTINATION "${FGGL_CONFIG_PATH}"
 )
 
 # generate the version file for the config file