CHANGES: mention a change backported to 1.10. [skip ci]

Author: guyharris

CHANGES

@@ -140,6 +140,8 @@ DayOfTheWeek, Month DD, YYYY / The Tcpdump Group
       Do not require vsnprintf().
       tests: Use the -tttt option, by default, for the tests.
       autoconf, CMake: Get the size of a void * and a time_t.
+    Documentation:
+      Fixed errors in doc/README.Win32.md.
 
 Friday, April 7, 2023 / The Tcpdump Group
   Summary for 4.99.4 tcpdump release