fixing comment

Author: SethHollandsworth

src/tools/genpolicy/src/registry.rs

@@ -364,7 +364,7 @@ fn add_verity_to_store(
     // Serialize in pretty format
     let serialized = serde_json::to_string_pretty(&data)?;
 
-    // Open the JSON file in append mode
+    // Open the JSON file to write
     let file = OpenOptions::new()
         .write(true)
         .open(cache_file)?;