count_table fails to build

[sbromberger]

[ 32%] Building CXX object examples/wordcounter/CMakeFiles/count_words.dir/count_words.cpp.o
In file included from /home/seth/dev/cpp/clippy-cpp/examples/wordcounter/count_words.cpp:8:
/home/seth/dev/cpp/clippy-cpp/examples/wordcounter/count_table.hpp:16:76: error: 'string_hash' is not a member of 'metall::utility'; did you mean 'str_hash'?
   16 |                                                           metall::utility::string_hash<metall::container::string>,
      |                                                                            ^~~~~~~~~~~
      |                                                                            str_hash