Fixed #21824 -- Added reference to LTS in docs/internals/security.txt

docs/internals/release-process.txt

@@ -144,7 +144,7 @@ the pace of releases afterwards.
 
 The follow releases have been designated for long-term support:
 
-    * Django 1.4, supported until at least March 2015.
+* Django 1.4, supported until at least March 2015.
 
 .. _release-process:
 

docs/internals/security.txt

@@ -60,6 +60,9 @@ for several versions of Django:
   Django 1.3. Upon the release of Django 1.5, Django 1.3's security
   support will end.
 
+* :ref:`Long-term support (LTS) releases <lts-releases>` will receive
+  security updates for a specified period.
+
 When new releases are issued for security reasons, the accompanying
 notice will include a list of affected versions. This list is
 comprised solely of *supported* versions of Django: older versions may