Port a few cr.yp.to links to be HTTPS

Because researching crypto should probably be secure.
diff --git a/docs/faq.rst b/docs/faq.rst
index 0b7bdce..10c8656 100644
--- a/docs/faq.rst
+++ b/docs/faq.rst
@@ -14,5 +14,5 @@
 
 If you prefer NaCl's design, we highly recommend `PyNaCl`_.
 
-.. _`NaCl`: http://nacl.cr.yp.to/
+.. _`NaCl`: https://nacl.cr.yp.to/
 .. _`PyNaCl`: https://pynacl.readthedocs.org
diff --git a/docs/hazmat/primitives/asymmetric/ec.rst b/docs/hazmat/primitives/asymmetric/ec.rst
index c1619dd..8e3a365 100644
--- a/docs/hazmat/primitives/asymmetric/ec.rst
+++ b/docs/hazmat/primitives/asymmetric/ec.rst
@@ -504,7 +504,7 @@
 .. _`some concern`: https://crypto.stackexchange.com/questions/10263/should-we-trust-the-nist-recommended-ecc-parameters
 .. _`less than 224 bits`: http://www.ecrypt.eu.org/ecrypt2/documents/D.SPA.20.pdf
 .. _`elliptic curve diffie-hellman is faster than diffie-hellman`: http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1100&context=cseconfwork
-.. _`minimize the number of security concerns for elliptic-curve cryptography`: http://cr.yp.to/ecdh/curve25519-20060209.pdf
+.. _`minimize the number of security concerns for elliptic-curve cryptography`: https://cr.yp.to/ecdh/curve25519-20060209.pdf
 .. _`SafeCurves`: http://safecurves.cr.yp.to/
 .. _`ECDSA`: https://en.wikipedia.org/wiki/ECDSA
 .. _`EdDSA`: https://en.wikipedia.org/wiki/EdDSA