Adding supported compression methods

Adding in supported compression methods to help

Test: m ota_from_target_files
Change-Id: I1c3101f983eb8b38d43752530bd9f61a85fddba4
diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
index c73dd97..28943fc 100755
--- a/tools/releasetools/ota_from_target_files.py
+++ b/tools/releasetools/ota_from_target_files.py
@@ -247,7 +247,7 @@
       older SPL.
 
   --vabc_compression_param
-      Compression algorithm to be used for VABC. Available options: gz, brotli, none
+      Compression algorithm to be used for VABC. Available options: gz, lz4, zstd, brotli, none
 
   --security_patch_level
       Override the security patch level in target files