[web] Properly parse prefstring in CLI args

web/src/configuration.rs

@@ -1,3 +1,4 @@
+use pronouns_today::UserPreferences;
 use std::fs::OpenOptions;
 use std::fs::File;
 use std::io::Write;
@@ -66,7 +67,7 @@ pub struct Run {
 	#[argh(option)]
 	/// default pronoun probabilites (formatted as a prefstring, like the ones in the
 	/// used in the custom URLs, e.g. "acaqeawdym")
-	pub default_prefstr: Option<String>,
+	pub default_prefstr: Option<UserPreferences>,
 }
 
 impl Run {