Update online.html

online.html

@@ -305,7 +305,7 @@
         <span><button id="but_start" type="button" class="btn btn-success btn-lg">Старт</button></span>
         <span><button id="but_stop" type="button" class="btn btn-danger btn-lg">Стоп</button></span>
         <span><button id="but_res" type="button" class="btn btn-info btn-lg">Рестарт</button></span>
-        <span><button id="but_sliv" type="button" class="btn btn-secondary btn-lg">Слив</button></span>        
+        <span><button id="but_sliv" type="button" class="btn btn-secondary btn-lg">Замена раствора</button></span>        
       </div> 
   </div>
   <div class="card-footer text-muted"> </div>