add, not install

Author: mbostock

docs/index.html

@@ -172,7 +172,7 @@
     When you want to share your notebooks as a static site, install the open-source Notebook Kit:
 
     ```sh
-    npm install @observablehq/notebook-kit
+    npm add @observablehq/notebook-kit
     ```
   </script>
   <script id="83" type="text/markdown">

docs/kit.html

@@ -23,13 +23,13 @@
     You can install Notebook Kit from [npm](https://www.npmjs.com/package/@observablehq/notebook-kit):
 
     ```sh
-    npm install @observablehq/notebook-kit
+    npm add @observablehq/notebook-kit
     ```
 
     If you use [pnpm](https://pnpm.io/), you must also explicitly install any fonts used by the [default styles](https://github.com/observablehq/notebook-kit/blob/main/src/templates/default.html) (unless you plan on using different fonts):
 
     ```sh
-    pnpm install @observablehq/notebook-kit @fontsource/inter @fontsource/source-serif-4 @fontsource/spline-sans-mono
+    pnpm add @observablehq/notebook-kit @fontsource/inter @fontsource/source-serif-4 @fontsource/spline-sans-mono
     ```
 
     Notebook Kit requires [Node.js](https://nodejs.org/en) 20.19+ or 22.12+.