Fix docs for "adb push --sync" to better match the implementation. am: b683bd657c am: 59ae5be924

Original change: https://android-review.googlesource.com/c/platform/packages/modules/adb/+/2976891

Change-Id: Id35533e6d1251b466eceff6214b9ba31f8fad189
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/client/commandline.cpp b/client/commandline.cpp
index c918950..c07be21 100644
--- a/client/commandline.cpp
+++ b/client/commandline.cpp
@@ -139,7 +139,7 @@
         "file transfer:\n"
         " push [--sync] [-z ALGORITHM] [-Z] LOCAL... REMOTE\n"
         "     copy local files/directories to device\n"
-        "     --sync: only push files that are newer on the host than the device\n"
+        "     --sync: only push files that have different timestamps on the host than the device\n"
         "     -n: dry run: push files to device without storing to the filesystem\n"
         "     -z: enable compression with a specified algorithm (any/none/brotli/lz4/zstd)\n"
         "     -Z: disable compression\n"