Correct changelog versions as there is no v2.19 or 2.18.1 yet

Signed-off-by: 1000TurquoisePogs <[email protected]>

CHANGELOG.md

@@ -4,9 +4,7 @@
 - Feature: added javascript `zos.getStatvfs(path)` function to obtain file system information (#482).
 - Add support for LE 64-bit in isgenq.c (#422).
 - Bugfix: IARV64 results must be checked for 0x7FFFF000 (#474)
-
-## `2.18.1`
-- Bugfix: IARV64 results must be checked for 0x7FFFF000 (#474)
+- Adding more arguments to httpClientSessionInit to allow passing back rc (#467).
 - Bugfix: SLH should not ABEND when MEMLIMIT is reached (additional NULL check)
 - Bugfix: support cross-memory server parameters longer than 128 characters 
   (zowe/zss#684)