refactor: add comment

Author: Samat Gaynutdinov

server/src/printers/NativeMakefilePrinter.h

@@ -37,6 +37,7 @@ namespace printer {
 
         fs::path buildDirectory, dependencyDirectory, buildDirectoryRelative;
 
+        // map variable with absolute path to $(someVar)
         std::map<std::string, fs::path, decltype(comparator)> pathToShellVariable;
 
         std::vector<fs::path> artifacts{};