fix up position of submit btn (#147)

Co-authored-by: Hugo Dueñas <[email protected]>

Author: anmode

index.html

@@ -683,11 +683,11 @@ <h3 id="importLabel">Importar MDO/KEC</h3>
             <label>MDO: <input id="importar_mdo" type="file" /></label>
             <label>KEC: <input id="importar_kec" type="file" /></label>
           </div>
+          <div class="modal-footer">
+            <input class="btn" type="submit" value="Importar" />
+          </div>
         </form>
       </div>
-      <div class="modal-footer">
-        <input class="btn" type="submit" value="Importar" />
-      </div>
     </div>
     <div
       aria-hidden="true"