Fix element paths when using reverse proxy subfolder (#272)

changedetectionio/templates/watch-overview.html

@@ -49,7 +49,7 @@
 
                 <td class="title-col inline">{{watch.title if watch.title is not none and watch.title|length > 0 else watch.url}}
                     <a class="external" target="_blank" rel="noopener" href="{{ watch.url }}"></a>
-                    {%if watch.fetch_backend == "html_webdriver" %}<img style="height: 1em; display:inline-block;" src="/static/images/Google-Chrome-icon.png" />{% endif %}
+                    {%if watch.fetch_backend == "html_webdriver" %}<img style="height: 1em; display:inline-block;" src="static/images/Google-Chrome-icon.png" />{% endif %}
 
                     {% if watch.last_error is defined and watch.last_error != False %}
                     <div class="fetch-error">{{ watch.last_error }}</div>
@@ -97,4 +97,4 @@
         </ul>
     </div>
 </div>
-{% endblock %}
+{% endblock %}