Fixed typo in parse_code_blobs docstring (#155)

Fixed typo in `parse_code_blobs` docstring

src/smolagents/utils.py

@@ -106,7 +106,7 @@ def parse_json_blob(json_blob: str) -> Dict[str, str]:
 
 
 def parse_code_blobs(code_blob: str) -> str:
-    """Parses the LLM's output to get any code blob inside. Will retrun the code directly if it's code."""
+    """Parses the LLM's output to get any code blob inside. Will return the code directly if it's code."""
     pattern = r"```(?:py|python)?\n(.*?)\n```"
     matches = re.findall(pattern, code_blob, re.DOTALL)
     if len(matches) == 0: