fixed some formatting and added a note

README.md

@@ -28,7 +28,7 @@ This is not really out of development, but to run it, clone the repo, go into /s
     - scenes/
     - images/
       
-      ### Back-end server -- Rust
+### Back-end server -- Rust
 
 The server component of Happening will be written in Rust.<br/>
 Parses the code and sends it via the API.<br/>
@@ -39,6 +39,8 @@ The variables are stored as a hashmap, characters are structs in a hashmap.<br/>
 ### API
 
 Using the network interface, port 20264.<br/>
+> [!NOTE]
+> The port is configurable in config.json of the server, client should be flexible with ports.
 
 Characters are sent to the frontend and stored there when the character is created on the frontend.<br/>
 There are 4 endpoints.