Sponsors: Updated diagrams.net sponsor level

Author: ssddanbrown

readme.md

@@ -51,46 +51,48 @@ Big thanks to these companies for supporting the project.
 <td align="center"><a href="https://www.federated.computer/bookstack" target="_blank">
     <img width="480" src="https://www.bookstackapp.com/images/sponsors/federated-computer.png" alt="Federated.computer">
 </a></td>
-</tr></tbody></table>
+</tr><tr>
+<td align="center"><a href="https://www.diagrams.net/" target="_blank">
+    <img width="480" src="https://www.bookstackapp.com/images/sponsors/diagramsnet.png" alt="Diagrams.net">
+</a></td>
+</tr>
+</tbody></table>
 
 #### Bronze Sponsors
 
 <table><tbody><tr>
-<td align="center"><a href="https://www.diagrams.net/" target="_blank">
-    <img width="240" src="https://www.bookstackapp.com/images/sponsors/diagramsnet.png" alt="Diagrams.net">
-</a></td>
 <td align="center"><a href="https://cloudabove.com/hosting" target="_blank">
     <img width="200" src="https://www.bookstackapp.com/images/sponsors/cloudabove.png" alt="Cloudabove">
 </a></td>
-</tr><tr>
 <td align="center"><a href="https://www.practicali.be" target="_blank">
     <img width="240" src="https://www.bookstackapp.com/images/sponsors/practicali.png" alt="Practicali">
 </a></td>
+</tr><tr>
 <td align="center"><a href="https://www.stellarhosted.com/bookstack/" target="_blank">
     <img width="240" src="https://www.bookstackapp.com/images/sponsors/stellarhosted.png" alt="Stellar Hosted">
 </a></td>
-</tr>
-<tr>
 <td align="center" style="text-align: center"><a href="https://nws.netways.de/apps/bookstack/" target="_blank">
     <img width="240" src="https://www.bookstackapp.com/images/sponsors/netways.png" alt="NETWAYS Web Services">
 </a></td>
+</tr>
+<tr>
 <td align="center" style="text-align: center"><a href="https://www.schroeck-consulting.de/" target="_blank">
     <img width="200" src="https://www.bookstackapp.com/images/sponsors/schroeck-consulting.png" alt="Schroeck IT Consulting">
 </a></td>
-</tr>
-<tr>
 <td align="center"><a href="https://practinet.be/" target="_blank">
     <img width="240" src="https://www.bookstackapp.com/images/sponsors/practinet.png" alt="Practinet">
 </a></td>
+</tr>
+<tr>
 <td align="center"><a href="https://route4me.com/" target="_blank">
     <img width="240" src="https://www.bookstackapp.com/images/sponsors/route4me.png" alt="Route4Me - Route Optimizer and Route Planner Software">
 </a></td>
-</tr>
-<tr>
 <td align="center"><a href="https://phamos.eu" target="_blank">
     <img width="136" src="https://www.bookstackapp.com/images/sponsors/phamos.png" alt="phamos">
 </a></td>
-<td align="center"><a href="https://sitespeak.ai/bookstack" target="_blank">
+</tr>
+<tr>
+<td align="center" colspan="2"><a href="https://sitespeak.ai/bookstack" target="_blank">
     <img width="240" src="https://www.bookstackapp.com/images/sponsors/sitespeak.png" alt="SiteSpeakAI">
 </a></td>
 </tr>