doc: Fix a typo in PowerDNS Advisory 2017-04

diff --git a/docs/security-advisories/powerdns-advisory-2017-04.rst b/docs/security-advisories/powerdns-advisory-2017-04.rst
index 4c4b321de2d897b6b0025edff34d56cc0305e446..971a0a36686d7ed23c29ef7b452e3b396964f28b 100644 (file)
--- a/docs/security-advisories/powerdns-advisory-2017-04.rst
+++ b/docs/security-advisories/powerdns-advisory-2017-04.rst
@@ -19,7 +19,7 @@ are still allowed even though the API has been configured as read-only
 via the
 `api-readonly <https://docs.powerdns.com/authoritative/settings.html#api-readonly>`__
 keyword.
-This missing check allows an attacker with valid API credentials could flush
+This missing check allows an attacker with valid API credentials to flush
 the cache, trigger a zone transfer or send a NOTIFY. This issue has been
 assigned CVE-2017-15091.