Update README.md

README.md

@@ -46,7 +46,7 @@ NexusRaven-V2 is capable of generating deeply nested function calls, parallel fu
 Please refer to our notebook, [How-To-Prompt.ipynb](https://colab.research.google.com/drive/19JYixRPPlanmW5q49WYi_tU8rhHeCEKW?usp=sharing), for more advanced tutorials on using NexusRaven-V2!
 
 1. When giving docstrings to Raven, please provide well-indented, detailed, and well-written docstrings as this can help accuracy.
-2. Raven does better when all functions provided to it require arguments (i.e. ```func(dummy_arg)``` is preferred over ```func()```) as this can help accuracy.
+2. Raven does better when all functions provided to it has arguments, either required or optional, (i.e. ```func(dummy_arg)``` is preferred over ```func()```) as this can help accuracy.
 3. We strongly recommend to set sampling to False when prompting NexusRaven-V2.
 4. We strongly recommend a very low temperature (~0.001).
 5. We strongly recommend following the prompting style below.