Fix CI-detected codespell warnings

src/test/span_tests.cpp

@@ -53,7 +53,7 @@ BOOST_AUTO_TEST_SUITE(span_tests)
 // aren't compatible with Spans at compile time.
 //
 // Previously there was a bug where writing a SFINAE check for vector<bool> was
-// not possible, because in libstdc++ vector<bool> has a data() memeber
+// not possible, because in libstdc++ vector<bool> has a data() member
 // returning void*, and the Span template guide ignored the data() return value,
 // so the template substitution would succeed, but the constructor would fail,
 // resulting in a fatal compile error, rather than a SFINAE error that could be