Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: urfeex

tests/test_error_code_message.cpp

@@ -195,7 +195,7 @@ TEST(ErrorCodeMessageTest, toString_uses_cpp_override_for_code_100_unknown_arg)
   EXPECT_NE(result.find("Unknown robot mode: 127"), std::string::npos);
 }
 
-TEST(ErrorCodeMessageTest, to_sting_uses_cpp_override_for_code_100_out_of_range_arg)
+TEST(ErrorCodeMessageTest, toString_uses_cpp_override_for_code_100_out_of_range_arg)
 {
   // The C++ override (step 1) takes priority over the static map.
   // Code 100, arg 99999 (out of range) must come from the override, not the fallback.