Update src/about.py

src/about.py

@@ -48,7 +48,8 @@ EVALUATION_QUEUE_TEXT = """
 Evaluation Metrics: Attack success rate (ASR) into two categories: (1) the pre-attack success rate (pre-ASR), and (2) the post-attack success.
 rate (post-ASR). Both are  percentage formula
 Fréchet inception distance(FID) into two categories:(1): the FID of image generated by Base Model (Pre-FID),and 
-(2) The FID of images generated by Unlearned Methods (Post-FID). 
+(2) The FID of images generated by Unlearned Methods (Post-FID).\\
+the number -1 means no data reported till now
 """
 
 CITATION_BUTTON_LABEL = "Copy the following snippet to cite these results"