docs: remove Yarn instructions

docs/api/extensions/bubble-menu.md

@@ -13,10 +13,7 @@ As always, the markup and styling is totally up to you.
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-bubble-menu
-# with Yarn
-yarn add @tiptap/extension-bubble-menu
 ```
 
 ## Settings

docs/api/extensions/character-count.md

@@ -11,11 +11,7 @@ The `CharacterCount` extension limits the number of allowed character to a speci
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-character-count
-
-# with Yarn
-yarn add @tiptap/extension-character-count
 ```
 
 ## Settings

docs/api/extensions/collaboration-cursor.md

@@ -17,11 +17,7 @@ We kindly ask you to [sponsor our work](/sponsor) when using this extension in p
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-collaboration-cursor
-
-# with Yarn
-yarn add @tiptap/extension-collaboration-cursor
 ```
 
 This extension requires the [`Collaboration`](/api/extensions/collaboration) extension.

docs/api/extensions/collaboration.md

@@ -17,11 +17,7 @@ We kindly ask you to [sponsor our work](/sponsor) when using this extension in p
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-collaboration yjs y-websocket
-
-# with Yarn
-yarn add @tiptap/extension-collaboration yjs y-websocket
 ```
 
 ## Settings

docs/api/extensions/color.md

@@ -11,11 +11,7 @@ This extension enables you to set the font color in the editor. It uses the [`Te
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-text-style @tiptap/extension-color
-
-# with Yarn
-yarn add @tiptap/extension-text-style @tiptap/extension-color
 ```
 
 This extension requires the [`TextStyle`](/api/marks/text-style) mark.

docs/api/extensions/dropcursor.md

@@ -13,11 +13,7 @@ Note that Tiptap is headless, but the dropcursor needs CSS for its appearance. T
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-dropcursor
-
-# with Yarn
-yarn add @tiptap/extension-dropcursor
 ```
 
 ## Settings

docs/api/extensions/floating-menu.md

@@ -11,10 +11,7 @@ This extension will make a contextual menu appear near a selection of text.
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-floating-menu
-# with Yarn
-yarn add @tiptap/extension-floating-menu
 ```
 
 ## Settings

docs/api/extensions/focus.md

@@ -13,11 +13,7 @@ Note that it’s only a class, the styling is totally up to you. The usage examp
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-focus
-
-# with Yarn
-yarn add @tiptap/extension-focus
 ```
 
 ## Settings

docs/api/extensions/font-family.md

@@ -10,11 +10,7 @@ This extension enables you to set the font family in the editor. It uses the [`T
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-text-style @tiptap/extension-font-family
-
-# with Yarn
-yarn add @tiptap/extension-text-style @tiptap/extension-font-family
 ```
 
 This extension requires the [`TextStyle`](/api/marks/text-style) mark.

docs/api/extensions/gapcursor.md

@@ -13,11 +13,7 @@ Note that Tiptap is headless, but the gapcursor needs CSS for its appearance. Th
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-gapcursor
-
-# with Yarn
-yarn add @tiptap/extension-gapcursor
 ```
 
 ## Source code

docs/api/extensions/history.md

@@ -11,11 +11,7 @@ This extension provides history support. All changes to the document will be tra
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-history
-
-# with Yarn
-yarn add @tiptap/extension-history
 ```
 
 ## Settings

docs/api/extensions/placeholder.md

@@ -11,11 +11,7 @@ This extension provides placeholder support. Give your users an idea what they s
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-placeholder
-
-# with Yarn
-yarn add @tiptap/extension-placeholder
 ```
 
 ## Settings

docs/api/extensions/starter-kit.md

@@ -11,11 +11,7 @@ The `StarterKit` is a collection of the most popular Tiptap extensions. If you
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/starter-kit
-
-# with Yarn
-yarn add @tiptap/starter-kit
 ```
 
 ## Included extensions

docs/api/extensions/text-align.md

@@ -15,11 +15,7 @@ This extension adds a text align attribute to a specified list of nodes. The att
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-text-align
-
-# with Yarn
-yarn add @tiptap/extension-text-align
 ```
 
 ## Settings

docs/api/extensions/typography.md

@@ -11,11 +11,7 @@ This extension tries to help with common text patterns with the correct typograp
 
 ## Installation
 ```bash
-# with npm
 npm install @tiptap/extension-typography
-
-# with Yarn
-yarn add @tiptap/extension-typography
 ```
 
 ## Rules