docs: add more information

README.md

@@ -1,6 +1,6 @@
 ## Quick Start
 
-Start a syncplay service, default at port tcp/8999.
+Start a syncplay service, default at `tcp/8999`, you can also specify a password.
 
 ```bash
 docker run -d \
@@ -11,7 +11,7 @@ docker run -d \
 dnomd343/syncplay
 ```
 
-If TLS is enabled, you have to set hostname and certificate folder
+If TLS is enabled, you have to set hostname and certificate folder.
 
 ```bash
 docker run -d \
@@ -24,3 +24,5 @@ docker run -d \
 -v <certs>:/certs \
 dnomd343/syncplay
 ```
+
+You can get more information on the [official documentation](https://syncplay.pl/guide/server/).