Add missing currency!

Author: Anasss

src/main/resources/templates/index.html

@@ -23,8 +23,8 @@ <h2>Country List</h2>
         <thead>
         <tr class="d-flex">
             <th  class="table-primary col-4" scope="col">Country</th>
-            <th class="table-primary col-4" scope="col">Buys</th>
-            <th class="table-primary col-4" scope="col">Sells</th>
+            <th class="table-primary col-4" scope="col">Buys ($)</th>
+            <th class="table-primary col-4" scope="col">Sells ($)</th>
         </tr>
         </thead>
         <tbody>