examples: fix comment syntax

Commit ac0a88fd2 accidentally added a stray character outside of the
comment which broke compilation. Fix by removing.

Reported-by:  autobuild https://curl.se/dev/log.cgi?id=20201105084306-12742

diff --git a/docs/examples/smtp-vrfy.c b/docs/examples/smtp-vrfy.c
index afc7d652816c00eee9d4880e23be2b932411b66a..7d021011cfeba999bd2aad5ea643490e22462a70 100644 (file)
--- a/docs/examples/smtp-vrfy.c
+++ b/docs/examples/smtp-vrfy.c
@@ -1,4 +1,4 @@
-'/***************************************************************************
+/***************************************************************************
  *                                  _   _ ____  _
  *  Project                     ___| | | |  _ \| |
  *                             / __| | | | |_) | |