correct image caption, remove gd2md alert

Author: tripledoublev

README.md

@@ -237,10 +237,8 @@ The first message (PING) sent through a tunnel contains the bytes [0x07, 0x02, 0
 
 
 
-<p id="gdcalert5" ><span style="color: red; font-weight: bold">>>>>>  gd2md-html alert: inline image link here (to images/image5.png). Store image on your image server and adjust path/filename/extension if necessary. </span><br>(<a href="#">Back to top</a>)(<a href="#gdcalert6">Next alert</a>)<br><span style="color: red; font-weight: bold">>>>>> </span></p>
 
-
-![Tunnerls and RouteIDs](./docs/diagrams/tunnels.png)
+![Tunnels and RouteIDs](./docs/diagrams/tunnels.png)
 
 
 Tunnels and RouteIDs communication flow in Veilid