[1.10.x] Fixed docs to refer to HSTS includeSubdomains as a directive.

The spec refers to it as a 'directive' rather than a 'tag':
https://tools.ietf.org/html/rfc6797#section-6.1.2

Backport of 8c3bc5cd7801a307a0bc2969abebe7a6ca48d17f from master

2 files changed, 3 insertions, 3 deletions

diff --git a/docs/ref/middleware.txt b/docs/ref/middleware.txt
index 961e4a272f..2d1d0f9604 100644
--- a/docs/ref/middleware.txt
+++ b/docs/ref/middleware.txt
@@ -249,8 +249,8 @@ so that infrequent visitors will be protected (31536000 seconds, i.e. 1 year,
 is common).
 
 Additionally, if you set the :setting:`SECURE_HSTS_INCLUDE_SUBDOMAINS` setting
-to ``True``, ``SecurityMiddleware`` will add the ``includeSubDomains`` tag to
-the ``Strict-Transport-Security`` header. This is recommended (assuming all
+to ``True``, ``SecurityMiddleware`` will add the ``includeSubDomains`` directive
+to the ``Strict-Transport-Security`` header. This is recommended (assuming all
 subdomains are served exclusively using HTTPS), otherwise your site may still
 be vulnerable via an insecure connection to a subdomain.
 
diff --git a/docs/ref/settings.txt b/docs/ref/settings.txt
index 3cb6b0408e..7e83d424d7 100644
--- a/docs/ref/settings.txt
+++ b/docs/ref/settings.txt
@@ -2040,7 +2040,7 @@ already have it.
 Default: ``False``
 
 If ``True``, the :class:`~django.middleware.security.SecurityMiddleware` adds
-the ``includeSubDomains`` tag to the :ref:`http-strict-transport-security`
+the ``includeSubDomains`` directive to the :ref:`http-strict-transport-security`
 header. It has no effect unless :setting:`SECURE_HSTS_SECONDS` is set to a
 non-zero value.