Fix changelog entry

Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
diff --git a/ChangeLog.d/implicit_key_usage_policy.txt b/ChangeLog.d/implicit_key_usage_policy.txt
index 2a4213b..ee33ecb 100644
--- a/ChangeLog.d/implicit_key_usage_policy.txt
+++ b/ChangeLog.d/implicit_key_usage_policy.txt
@@ -1,5 +1,5 @@
 Changes
    * Implicitly add PSA_KEY_USAGE_SIGN_MESSAGE key usage policy flag when
      PSA_KEY_USAGE_SIGN_HASH flag is set and PSA_KEY_USAGE_VERIFY_MESSAGE flag
-     when PSA_KEY_USAGE_VERIFY_HASH flag is set. This implicit policy flag
-     setting is also apply when loading a key from storage.
+     when PSA_KEY_USAGE_VERIFY_HASH flag is set. This usage flag extension
+     is also applied when loading a key from storage.