branding: move individual nova-flow banner below header and remove duplicate Nova logo

README.md

@@ -2,11 +2,12 @@
 <div align="center">
   <img alt="Moderno Tech" src="images/moderno-tech-logo.png" width="84"/>
 
-![Banner de Nova-Flow](images/nova-flow-banner.png)
 
 # Nova Flow — Moderno Tech
 </div>
 
+![Nova Flow banner](images/nova-flow-banner.jpg)
+
 # Nova Flow
 
 **Moderno Tech — Nova**
@@ -48,4 +49,4 @@ No se inventan ni afirman capacidades no verificadas.
 MODERNO TECH
 Nova AI
 Innovation. Engineering. Intelligence.
-Sitio oficial: https://www.moderno.com.ar
+Sitio oficial: https://www.moderno.com.ar