Update example output comments

Add `Output` comments to the example files to reflect the actual output
of the programs. This helps with verifying correctness and understanding
example behavior.

examples/tuple-struct.myc

@@ -1,5 +1,6 @@
 ;; Benchmark: 890ns
 ;; Benchmark-Repeat: 2258
+;; Output: ["Symbol:" "btc" "field:" :close "id:" "cls"]
 (do
      (def p (fn [conf]
        (do