update README to reflect total number of tasks

README.md

@@ -56,6 +56,7 @@ Currently, Patho-Bench contains the following task families. We will add more ta
 | **Mutation Prediction**                  | Predicting specific genetic mutations in tumors                                     | 34       | 
 | **Treatment Response & Assessment**      | Evaluating patient response to treatment                                            | 7        | 
 | **Survival Prediction**                  | Predicting survival outcomes and risk stratification                                | 12        |
+| **Total**                               |                                                                                       | **95**    |
 
 ## 🔥 Latest updates
 - **April 2025**: Patho-Bench has been updated with 53 new tasks! Now Patho-Bench contains a total of 95 public tasks across 33 datasets.