[master] e4a04d593 build: Typo

[Dridi Boukelmoune]

commit e4a04d593422f8213a8a0f77c7cda6fe807ecf30
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Thu Sep 9 19:02:03 2021 +0200

    build: Typo

diff --git a/configure.ac b/configure.ac
index eb055da0a..da9bb0603 100644
--- a/configure.ac
+++ b/configure.ac
@@ -543,7 +543,7 @@ AC_CHECK_DECL([SO_ACCEPTFILTER],
 # implement them.
 #
 # Varnish will build and run without these, but connections will not
-# time out, which may leave Varnish vulnerable to denail-of-service
+# time out, which may leave Varnish vulnerable to denial-of-service
 # attacks which would not be possible on other platforms.
 #
 # Newer Solaris releases with the Volo framework (Solaris 11,