[ci skip] UPGRADING typo

Author: devnexen

UPGRADING

@@ -66,7 +66,7 @@ PHP 8.6 UPGRADE NOTES
 
 - Mysqli:
   . mysqli.default_port now checks the validity of the value which should be
-    between 0 and 65545 included.
+    between 0 and 65535 included.
 
 - Opcache:
   . opcache.jit_debug accepts a new flag: ZEND_JIT_DEBUG_TRACE_EXIT_INFO_SRC.