Clarify config

Author: lightvector

cpp/configs/gtp_human5k_example.cfg

@@ -1,7 +1,8 @@
 
 # This is an example config for configuring KataGo to attempt to imitate a weaker human player.
-# Running with this config requires giving a human SL model on the command line such as:
-# -human-model b18c384nbt-humanv0.bin.gz
+# Running with this config requires giving a human SL model b18c384nbt-humanv0.bin.gz
+# on the command line such as:
+# ./katago gtp -config gtp_human5k_example.cfg -model your_favorite_normal_model_for_katago.bin.gz -human-model b18c384nbt-humanv0.bin.gz
 # You can obtain the human model at https://github.com/lightvector/KataGo/releases/tag/v1.15.0
 
 # Below, the most important parts of the config for human-like play are commented.