dont duplicate commands in autocomplete

Signed-off-by: Ava Hahn <ava@sunnypup.io>

src/bin/relish.rs

@@ -114,6 +114,7 @@ impl Completer for CustomCompleter {
                             end: pos
                         }
                     });
+                    continue;
                 }
 
                 if sym.contains(tok.as_str()) {