Fix awkward text, browsers should be plural

apps/routerconsole/jsp/welcome.jsp

@@ -254,7 +254,7 @@
 <img class="wizardimg" src="/themes/console/images/wizard/undraw_startup_life.png">
 <div class="wizardtext"><p>
 <%=intl._t("Your browser needs to be configured to work with I2P.")%>
-<%=intl._t("We have instructions for configuring both Firefox and Chromium based browser with I2P.")%>
+<%=intl._t("We have instructions for configuring both Firefox and Chromium based browsers with I2P.")%>
 <a href="https://geti2p.net/htproxyports" target="_blank"><%=intl._t("You can find these instructions on our website")%></a>.
 <%
         if (net.i2p.util.SystemVersion.isWindows()) {