Update 02.3.md

en/02.3.md

@@ -193,7 +193,7 @@ Use the `func` keyword to define a function.
 func funcName(input1 type1, input2 type2) (output1 type1, output2 type2) {
     // function body
     // multi-value return
-    return value1, value2
+    return output1, output2
 }
 ```
 We can extrapolate the following information from the example above.