[libcxx] [NFC] Fix typo in test/support/test_range.h

[jloser]

Summary

Fix typo in #error filepath.

[ldionne]

Thanks!

libcxx/test/support/test_range.h

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 #ifndef LIBCXX_TEST_SUPPORT_TEST_RANGE_H
 #define LIBCXX_TEST_SUPPORT_TEST_RANGE_H
 
 #include <iterator>
 #include <ranges>
 
 #include "test_iterators.h"
 
 #ifdef _LIBCPP_HAS_NO_RANGES
-#error "test/suppoort/test_range.h" can only be included in builds supporting ranges
+#error "test/support/test_range.h" can only be included in builds supporting ranges
 #endif
 
 struct sentinel {
   bool operator==(std::input_or_output_iterator auto const&) const;
 };
 
 template <template <class...> class I>
 requires std::input_or_output_iterator<I<int*> >