Replace bold with italics for "fast" in README description

Author: robertpiosik

README.md

@@ -11,7 +11,7 @@
   <a href="https://marketplace.visualstudio.com/items?itemName=robertpiosik.gemini-coder"><img src="https://img.shields.io/badge/Install-VS_Code_Marketplace-blue" alt="Get from Visual Studio Code Marketplace" /></a> <a href="https://open-vsx.org/extension/robertpiosik/gemini-coder"><img src="https://img.shields.io/badge/Install-Open_VSX_Registry-a60ee5" alt="Get from Open VSX Registry" /></a> <a href="https://github.com/robertpiosik/CodeWebChat/blob/dev/LICENSE"><img src="https://img.shields.io/badge/License-GPL--3.0-green.svg" alt="GPL-3.0 license" /></a>
 </p>
 
-Code Web Chat is a free and open-source, privacy-first **AI coding toolkit for VS Code**. It helps construct zero-overhead prompts for fast and accurate multi-file edits in your codebase using:
+Code Web Chat is a free and open-source, privacy-first **AI coding toolkit for VS Code**. It helps construct zero-overhead prompts for _fast_ and accurate multi-file edits in your codebase using:
 
 - chatbots—Gemini, ChatGPT, Claude, etc.
 - APIs—remote and local model providers