Update docs

Author: richerfu

README.md

@@ -19,7 +19,7 @@ const handlePing = async () => {
 
 Previously, we had a fully functional ping tool built using `ohos-rs`.However, its release build size exceeded 900KB which is quite large for such a lightweight utility.
 
-By re-implementing the same functionality in Zig, we successfully reduced the release build size to just 190KB—over four times smaller than the original version.
+By re-implementing the same functionality in Zig, we successfully reduced the release build size to just 35KB—over four times smaller than the original version.
 
 ## License