HXL-CPLP/forum#11: adicionado aviso legal

Author: GustavoDuregger

README.md

@@ -9,3 +9,10 @@
 
 [![Grupo de Usuários do Padrão HXL da Comunidade dos Países de Língua Portuguesa](https://hxl.etica.ai/img/banner-hxl-cplp.png)](https://padrao-hxl.etica.ai/)
 
+
+## Disclaimer
+The website https://padrao-hxl.etica.ai/ and
+https://github.com/HXL-CPLP GitHub projects were made by the volunteer
+Grupo de Usuários do Padrão HXL da Comunidade dos Países de Língua Portuguesa
+**are not affiliated or endorsed by HXLStandard.org, OCHA, IFRC and similar**,
+although there may be collaboration or use of content.