Docs: Fixing the few broken links post L release.

Bug: 18226820
Change-Id: I36a1d437cea9cf72f411a702e33cb5fc125e9d79
diff --git a/src/devices/tech/security/acknowledgements.jd b/src/devices/tech/security/acknowledgements.jd
index 4e1bd3c..097da07 100644
--- a/src/devices/tech/security/acknowledgements.jd
+++ b/src/devices/tech/security/acknowledgements.jd
@@ -109,13 +109,13 @@
 title="This person contributed code that improved Android security">
 </a></p>
 
-<p>Robert Craig of <a href="http://www.nsa.gov/research/ia_research/">
+<p>Robert Craig of <a href="https://www.nsa.gov/research/ia_research/">
 Trusted Systems Research Group</a>, US National Security Agency
 <a href="https://android-review.googlesource.com/#/q/owner:%22Robert+Craig+%253Crpcraig%2540tycho.ncsc.mil%253E%22+status:merged">
 <img style="vertical-align:middle" src="images/tiny-robot.png" alt="Patch Symbol"
 title="This person contributed code that improved Android security"></a></p>
 
-<p>Stephen Smalley of <a href="http://www.nsa.gov/research/ia_research/">
+<p>Stephen Smalley of <a href="https://www.nsa.gov/research/ia_research/">
 Trusted Systems Research Group</a>, US National Security Agency
 <a href=
 "https://android-review.googlesource.com/#/q/owner:%22Stephen+Smalley+%253Csds%2540tycho.nsa.gov%253E%22+status:merged">
@@ -196,13 +196,13 @@
 at Urbana-Champaign</a>
 <br>(<a href="mailto:naveed2@illinois.edu">naveed2@illinois.edu</a>)</p>
 
-<p>Robert Craig of <a href="http://www.nsa.gov/research/ia_research/">
+<p>Robert Craig of <a href="https://www.nsa.gov/research/ia_research/">
 Trusted Systems Research Group</a>, US National Security Agency
 <a href="https://android-review.googlesource.com/#/q/owner:%22Robert+Craig+%253Crpcraig%2540tycho.ncsc.mil%253E%22+status:merged">
 <img style="vertical-align:middle" src="images/tiny-robot.png" alt="Patch Symbol"
 title="This person contributed code that improved Android security"></a></p>
 
-<p>Stephen Smalley of <a href="http://www.nsa.gov/research/ia_research/">
+<p>Stephen Smalley of <a href="https://www.nsa.gov/research/ia_research/">
 Trusted Systems Research Group</a>, US National Security Agency
 <a href=
 "https://android-review.googlesource.com/#/q/owner:%22Stephen+Smalley+%253Csds%2540tycho.nsa.gov%253E%22+status:merged">
@@ -225,13 +225,13 @@
 
 <div style="LINE-HEIGHT:25px;">
 
-<p>Robert Craig of <a href="http://www.nsa.gov/research/ia_research/">
+<p>Robert Craig of <a href="https://www.nsa.gov/research/ia_research/">
 Trusted Systems Research Group</a>, US National Security Agency
 <a href="https://android-review.googlesource.com/#/q/owner:%22Robert+Craig+%253Crpcraig%2540tycho.ncsc.mil%253E%22+status:merged">
 <img style="vertical-align:middle" src="images/tiny-robot.png" alt="Patch Symbol"
 title="This person contributed code that improved Android security"></a></p>
 
-<p>Stephen Smalley of <a href="http://www.nsa.gov/research/ia_research/">
+<p>Stephen Smalley of <a href="https://www.nsa.gov/research/ia_research/">
 Trusted Systems Research Group</a>, US National Security Agency
 <a href=
 "https://android-review.googlesource.com/#/q/owner:%22Stephen+Smalley+%253Csds%2540tycho.nsa.gov%253E%22+status:merged">