Use a normal quote here, not sure where the smart quote came from
diff --git a/docs/security.rst b/docs/security.rst
index 8895970..2b96d58 100644
--- a/docs/security.rst
+++ b/docs/security.rst
@@ -7,6 +7,6 @@
fingerprint ``E27D 4AA0 1651 72CB C5D2 AF2B 125F 5C67 DFE9 4084`` (this public
key is available from most commonly-used key servers).
-Once you’ve submitted an issue via email, you should receive an acknowledgment
+Once you've submitted an issue via email, you should receive an acknowledgment
within 48 hours, and depending on the action to be taken, you may receive
further followup emails.