Import project: Fix standard

Author: danmar

lib/importproject.cpp

@@ -711,7 +711,7 @@ void ImportProject::importVcxproj(const std::string &filename, std::map<std::str
                 else if (i.cppstd == Standards::CPP14)
                     fs.standard = "c++14";
                 else if (i.cppstd == Standards::CPP17)
-                    fs.standard = "c++14";
+                    fs.standard = "c++17";
                 else if (i.cppstd == Standards::CPP20)
                     fs.standard = "c++20";
                 fs.defines += ';' + i.preprocessorDefinitions;