Update README.md (#692)

Author: otaGran

README.md

@@ -81,7 +81,7 @@ make -j4 gpt-2-backend gpt-j
 
 # Run the GPT-2 small 117M model
 ../examples/gpt-2/download-ggml-model.sh 117M
-./bin/gpt-2 -m models/gpt-2-117M/ggml-model.bin -p "This is an example"
+./bin/gpt-2-backend -m models/gpt-2-117M/ggml-model.bin -p "This is an example"
 
 # Run the GPT-J 6B model (requires 12GB disk space and 16GB CPU RAM)
 ../examples/gpt-j/download-ggml-model.sh 6B