fix: fix plugin installation command syntax across all READMEs

Author: Nuttapon

customer-support/README.md

@@ -5,7 +5,7 @@ A customer support plugin primarily designed for [Cowork](https://claude.com/pro
 ## Installation
 
 ```
-claude plugins add knowledge-work-plugins/customer-support
+claude plugin install customer-support@knowledge-work-plugins
 ```
 
 ## What It Does

data/README.md

@@ -5,7 +5,7 @@ A data analyst plugin primarily designed for [Cowork](https://claude.com/product
 ## Installation
 
 ```
-claude plugins add knowledge-work-plugins/data
+claude plugin install data@knowledge-work-plugins
 ```
 
 ## What It Does

design/README.md

@@ -5,7 +5,7 @@ A design productivity plugin primarily designed for [Cowork](https://claude.com/
 ## Installation
 
 ```bash
-claude plugins add knowledge-work-plugins/design
+claude plugin install design@knowledge-work-plugins
 ```
 
 ## Commands

engineering/README.md

@@ -5,7 +5,7 @@ A software engineering plugin primarily designed for [Cowork](https://claude.com
 ## Installation
 
 ```bash
-claude plugins add knowledge-work-plugins/engineering
+claude plugin install engineering@knowledge-work-plugins
 ```
 
 ## Commands

enterprise-search/README.md

@@ -136,7 +136,7 @@ Result: "Based on message history and doc authorship,
 
 ```bash
 # 1. Install
-claude plugins add knowledge-work-plugins/enterprise-search
+claude plugin install enterprise-search@knowledge-work-plugins
 
 # 2. Search across everything
 /enterprise-search:search [your question here]

finance/README.md

@@ -7,7 +7,7 @@ A finance and accounting plugin primarily designed for [Cowork](https://claude.c
 ## Installation
 
 ```bash
-claude plugins add knowledge-work-plugins/finance
+claude plugin install finance@knowledge-work-plugins
 ```
 
 ## Commands

human-resources/README.md

@@ -5,7 +5,7 @@ A people operations plugin primarily designed for [Cowork](https://claude.com/pr
 ## Installation
 
 ```bash
-claude plugins add knowledge-work-plugins/human-resources
+claude plugin install human-resources@knowledge-work-plugins
 ```
 
 ## Commands

legal/README.md

@@ -14,15 +14,15 @@ An AI-powered productivity plugin for in-house legal teams, primarily designed f
 ## Installation
 
 ```
-claude plugins add knowledge-work-plugins/legal
+claude plugin install legal@knowledge-work-plugins
 ```
 
 ## Quick Start
 
 ### 1. Install the plugin
 
 ```
-claude plugins add knowledge-work-plugins/legal
+claude plugin install legal@knowledge-work-plugins
 ```
 
 ### 2. Configure your playbook

marketing/README.md

@@ -5,7 +5,7 @@ A marketing plugin primarily designed for [Cowork](https://claude.com/product/co
 ## Installation
 
 ```bash
-claude plugins add knowledge-work-plugins/marketing
+claude plugin install marketing@knowledge-work-plugins
 ```
 
 ## Commands

operations/README.md

@@ -5,7 +5,7 @@ A business operations plugin primarily designed for [Cowork](https://claude.com/
 ## Installation
 
 ```bash
-claude plugins add knowledge-work-plugins/operations
+claude plugin install operations@knowledge-work-plugins
 ```
 
 ## Commands