chore (hosts/mystra/taskd): comments

hosts/mystra/taskd.nix

@@ -1,5 +1,23 @@
 { ... }:
 {
+  # # NOTE:
+  # After server installation, you must synchronize the clients with
+  # taskd. To do so, export the user config as follows (on server):
+  # ```bash
+  # nixos-taskserver user export personal hms > hms_config.sh
+  # ```
+  # and copy it to the client machine. Run it (on client):
+  # ```bash
+  # sh hms_config.sh
+  # ```
+  # and initialize synchronization (on client):
+  # ```bash
+  # task sync init
+  # ``` 
+  # See [this link](https://wiki.kunzelma.de/taskwarrior) for more.
+  # 
+  # # TODO: find a better way than the mess above.
+
   services.taskserver = {
     enable = true;
     fqdn = "henri-saudubray.fr";