Improve changelog entry for #4217

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/ChangeLog.d/add-missing-parenthesis.txt b/ChangeLog.d/add-missing-parenthesis.txt
index ec01985..9576ff3 100644
--- a/ChangeLog.d/add-missing-parenthesis.txt
+++ b/ChangeLog.d/add-missing-parenthesis.txt
@@ -1,4 +1,3 @@
 Bugfix
-   * Add a parenthesis that was missing from ecp.c when
-     MBEDTLS_ECP_RANDOMIZE_MXZ_ALT is defined. Found and reported by
-     mbeniamino in #4217.
+   * Fix a compilation error when MBEDTLS_ECP_RANDOMIZE_MXZ_ALT is
+     defined. Fixes #4217.