docs: clarify prerequisites tools

Author: subhod-i

README.md

@@ -16,6 +16,8 @@ quali.chat is a chat app that extends the decentralised Matrix communication pro
 
 ## Prerequisites
 
+This guide assumes familiarity with Linux server administration, Docker and Docker Compose, OAuth2/OIDC identity providers, Matrix protocol fundamentals and Synapse homeserver configuration/operations, TLS/HTTPS certificate management, reverse proxies (e.g., Nginx) and DNS, basic networking/firewalls, and Node.js tooling.
+
 Installation and configuration of:
 - Synapse: Matrix homeserver ([element-hq/synapse](https://github.com/element-hq/synapse))
   - [quali-chat/synapse-homeserver-patch](https://github.com/quali-chat/synapse-homeserver-patch.git) contains configurations, custom modules, and pre-registered bot accounts needed for quali.chat.
@@ -146,4 +148,4 @@ Refer to the earlier section [Setup](#setup)
 - [SIWE (Sign-In with Ethereum)](https://docs.login.xyz/)
 - [Alchemy API Documentation](https://docs.alchemy.com/)
 
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+---