preview rls language in readme (#878)

Author: paulirish

README.md

@@ -4,6 +4,9 @@ A unified repository for authoring, calibrating, and evaluating modern web devel
 
 The published distribution of this guidance is compiled and released to the [GoogleChrome/modern-web-guidance](https://github.com/GoogleChrome/modern-web-guidance) repository as agent skills including the primary `modern-web-guidance` skill (which utilizes a bundled CLI distribution) alongside other standalone skills.
 
+[!NOTE:] 
+This is a **preview release** of Modern Web Guidance. We're actively adding new content and we [welcome contributions or feedback on GitHub](https://github.com/GoogleChrome/modern-web-guidance-src).
+
 See [CONTRIBUTING.md](./CONTRIBUTING.md) for how we work on the project and orientation of the codebase. We're open to contributions to guidance, eval cases, eval infra and more. :) 
 
 ---

README.mwg.md

@@ -311,7 +311,7 @@ _View an example:_ [the `navigation-drawer` guide](https://github.com/GoogleChro
 
 > [!TIP]
 > Note: We use `npx` to ensure the content doesn't go stale, but the CLI works offline, completely private and local.
-> The NPM package is self-contained, with no extra dependencies to ensure both low-latency and supply-chain security.
+> The npm package is self-contained, with no extra dependencies to ensure both low-latency and supply-chain security.
 
 ## <img src="https://github.com/GoogleChrome/modern-web-guidance/raw/main/.github/img/package.svg" width="24" height="24" style="vertical-align: middle; margin-right: 4px;"> Alternative Installation Methods
 

serving/skills-cli/template/README.md

@@ -10,6 +10,9 @@ Inject web platform expertise, best practices, and modern API patterns directly
 
 *Supported by the Google Chrome team, the Microsoft Edge team, and the web development community.*
 
+[!NOTE:] 
+This is a **preview release** of Modern Web Guidance. We're actively adding new content and we [welcome contributions or feedback on GitHub](https://github.com/GoogleChrome/modern-web-guidance-src).
+
 <!-- <LIKE A DEMO VIDEO LOOP OR SOMETHING?> -->
 
 ## <img src="https://github.com/GoogleChrome/modern-web-guidance/raw/main/.github/img/terminal.svg" width="24" height="24" style="vertical-align: middle; margin-right: 4px;"> Quickstart
@@ -18,7 +21,7 @@ Inject web platform expertise, best practices, and modern API patterns directly
 npx modern-web-guidance@latest install
 ```
 
-This command runs an interactive wizard to place the SKILL.md appropriately. See [Alternative Installation Methods](#alternative-installation-methods) below.
+This command runs an interactive wizard to place the SKILL.md appropriately. See [Alternative Installation Methods](#-alternative-installation-methods) below.
 
 #### Try it out (without installing)
 
@@ -97,7 +100,7 @@ _View an example:_ [the `navigation-drawer` guide](https://github.com/GoogleChro
 
 > [!TIP]
 > Note: We use `npx` to ensure the content doesn't go stale, but the CLI works offline, completely private and local.
-> The NPM package is self-contained, with no extra dependencies to ensure both low-latency and supply-chain security.
+> The npm package is self-contained, with no extra dependencies to ensure both low-latency and supply-chain security.
 
 ## <img src="https://github.com/GoogleChrome/modern-web-guidance/raw/main/.github/img/package.svg" width="24" height="24" style="vertical-align: middle; margin-right: 4px;"> Alternative Installation Methods