Two random grammar fixes (#3402)

diff --git a/docs/security.rst b/docs/security.rst
index 1cc1273..ff0a84a 100644
--- a/docs/security.rst
+++ b/docs/security.rst
@@ -109,7 +109,7 @@
 
 The list of people and organizations who receives advanced notification of
 security issues is not and will not be made public. This list generally
-consists of high profile downstream distributors and is entirely at the
+consists of high-profile downstream distributors and is entirely at the
 discretion of the ``cryptography`` team.
 
 .. _`master`: https://github.com/pyca/cryptography