Fix invalid variable reference in macOS launch configuration (#4)

.vscode/launch.json

@@ -26,7 +26,7 @@
               "miDebuggerPath": "gdb.exe",
             },
             "osx": {
-              "program": "${workspaceFolder}/bin/Debug/${workspaceFolderBaseName}",
+              "program": "${workspaceFolder}/bin/Debug/${workspaceFolderBasename}",
               "MIMode": "lldb"
             },
             "linux": {