Update doc/specs/stdlib_io.md

lewisfish · milancurcic · web-flow · commit 8207d484e061 · 2022-01-13T09:06:42.000Z
Co-authored-by: Milan Curcic &lt;caomaco@gmail.com&gt;
diff --git a/doc/specs/stdlib_io.md b/doc/specs/stdlib_io.md
@@ -313,4 +313,5 @@ program demo_fmt_constants
     print FMT_COMPLEX_SP, c32
     print FMT_COMPLEX_DP, c64
 
+end program demo_fmt_constants
 ```
