Update README.md

README.md

@@ -143,7 +143,7 @@ The results above reveal the following observations:
 
 ## Domain-Domain Duplication
 
-Let $D_1, D_2, \dots, D_N$ represent $N$ distinct domains, where we select top-20 URLs for each domain $D_i$, denoted as $\{U_{i1}, U_{i2}, \dots, U_{i20}\}$,. The total set of URLs across all domains is represented as $\mathcal{U}$, and the total number of URLs is $M = |\mathcal{U}|$.
+Let \\(D_1, D_2, \dots, D_N)\\ represent $N$ distinct domains, where we select top-20 URLs for each domain $D_i$, denoted as $\{U_{i1}, U_{i2}, \dots, U_{i20}\}$,. The total set of URLs across all domains is represented as $\mathcal{U}$, and the total number of URLs is $M = |\mathcal{U}|$.
 
 For each URL $U_k \in \mathcal{U}$, the term frequency (TF) is defined as the proportion of $U_k$ in the total set of URLs: