docs: clarify preserve_order behavior

Signed-off-by: Rui Chen <rui@chenrui.dev>

action.yml

@@ -22,7 +22,7 @@ inputs:
     description: "Identify the release as a prerelease. Defaults to false"
     required: false
   preserve_order:
-    description: "Preserver the order of the artifacts when uploading"
+    description: "Upload artifacts sequentially in the provided order. This does not control the final display order GitHub uses for release assets."
     required: false
   files:
     description: "Newline-delimited list of path globs for asset files to upload"