completion : Fix a typo in warning message (ggml-org#20082)

resuse -> reuse

Author: standby24x7

tools/completion/completion.cpp

@@ -376,7 +376,7 @@ int main(int argc, char ** argv) {
             // remove any "future" tokens that we might have inherited from the previous session
             if (session_tokens.size() > n_match) {
                 if (!llama_memory_seq_rm(mem, -1, n_match, -1)) {
-                    LOG_WRN("%s: unable to resuse common prefix (for example, when the memory is recurrent)\n", __func__);
+                    LOG_WRN("%s: unable to reuse common prefix (for example, when the memory is recurrent)\n", __func__);
                     llama_memory_clear(mem, true);
                     session_tokens.clear();
                     n_match = 0;