Fix char typo in README

README.md

@@ -236,7 +236,7 @@ print(tokenizer.decode(outputs[0]))
 ```
 
 ### Fill-in-the-middle
-Fill-in-the-middle uses special tokens to identify the prefix/middle/suffic part of the input and output:
+Fill-in-the-middle uses special tokens to identify the prefix/middle/suffix part of the input and output:
 
 ```python
 input_text = "<fim-prefix>def print_hello_world():\n    <fim-suffix>\n    print('Hello world!')<fim-middle>"