Update README to clarify context file ordering and standardize privacy list formatting

Author: robertpiosik

README.md

@@ -154,15 +154,15 @@ Install the [browser extension](https://github.com/robertpiosik/CodeWebChat/tree
 
 ## Prompt caching
 
-CWC orders selected files by modification recency. This, combined with instructions placement at the message's very end, creates cost-efficient workflow where most of constructed messages utilize [prompt caching](https://developers.openai.com/api/docs/guides/prompt-caching).
+**CWC orders context files by modification and selection recency.** This, combined with instructions placement at the message's very end creates highly cost-efficient system which heavily utilize [prompt caching](https://developers.openai.com/api/docs/guides/prompt-caching).
 
 Make your chatbot quota last longer, lower input token costs by up to 90%, and reduce latency by up to 80%.
 
 ## Privacy
 
-- zero telemetry
-- browser communication over localhost
-- model providers called directly
+- Zero telemetry.
+- Browser communication over localhost.
+- Model providers called directly.
 
 ## Commands