Update README.md

README.md

@@ -50,6 +50,7 @@ A table contains three columns hero1[str], hero2[str] and counts[int], which is
 
 **adjacency_matrix.csv:**
 A matrix contains 6267 columns times 6267 rows, each cell with an [int] value. Each row/column represents a hero, each nondiagonal cell represents the total times the colunm hero and the row hero shows in a same comic and each diagonal cell represents the total counts of the colunm(row) hero in this dataset.
+**This file cannot be accessed by config directly, please download by filename.**
 
 ## Source Data