Fix typo (note by oneton@users.github)

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3716)
diff --git a/crypto/LPdir_vms.c b/crypto/LPdir_vms.c
index 1f85ac7..e35363f 100644
--- a/crypto/LPdir_vms.c
+++ b/crypto/LPdir_vms.c
@@ -8,7 +8,7 @@
  */
 
 /*
- * This file is dual-licensed and is also avialable under the following
+ * This file is dual-licensed and is also available under the following
  * terms:
  *
  * Copyright (c) 2004, Richard Levitte <richard@levitte.org>