Fix incorrect case in changelog entry
@@ -2,7 +2,7 @@ Bugfix
* Add printf function attributes to mbedtls_debug_print_msg because we were
not actually getting any printf format specifier warnings prior to this.
Also add extra printf compiler warning flags to builds.
-Requirement Changes
+Requirement changes
* Use %zu for print of type size_t in new work, however please do not use
them in backports, and preferably not in code that needs to be
backported.
