Update package.json (aptos-labs#12479)

1. Simplified the description to make it concise and clear.
2. Removed unnecessary information from the description.
3. Ensured consistent formatting and alignment of the JSON properties.

package.json

@@ -1,5 +1,5 @@
 {
-  "description": "This is a pure dependency package.json which installs dependencies for js utility scripts used in the repo",
+  "description": "This package.json installs dependencies for JavaScript utility scripts used in the repo",
   "packageManager": "[email protected]",
   "private": true,
   "type": "module",
@@ -18,4 +18,4 @@
     "@actions/core": "^1.10.1",
     "toml": "^3.0.0"
   }
-}
+}