config: document default value of http.sslVerify

Remove any doubt that certificates might not be verified by
default.

Signed-off-by: Simon Ruderich <simon@ruderich.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/config.txt

diff --git a/Documentation/config.txt b/Documentation/config.txt
index cbae7a6..2f4d6c3 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1793,8 +1793,8 @@
 
 http.sslVerify::
 	Whether to verify the SSL certificate when fetching or pushing
-	over HTTPS. Can be overridden by the `GIT_SSL_NO_VERIFY` environment
-	variable.
+	over HTTPS. Defaults to true. Can be overridden by the
+	`GIT_SSL_NO_VERIFY` environment variable.
 
 http.sslCert::
 	File containing the SSL certificate when fetching or pushing