fix: update plugin description and remove readme installation instructions

.github/plugin/marketplace.json

@@ -80,7 +80,7 @@
     {
       "name": "context-matic",
       "source": "context-matic",
-      "description": "General-purpose AI models are trained on public code and documentation, much of it outdated. They have no awareness of an actual API version, latest SDKs, or recommended workflows. ContextMatic gives GitHub Copilot deterministic, version-aware API context generated directly from API definitions and SDKs. Instead of guessing from public examples, the agent is grounded in current SDK versions, idiomatic code samples, and recommended integration workflows.",
+      "description": "ContextMatic turns your AI agents from API-guessers into API-experts. By feeding agents exact, version-aware SDK methods and typed models for providers like PayPal, Spotify, and Twilio, ContextMatic replaces guesswork and outdated training data with high-fidelity ground truth. This eliminates hallucinations and broken code, ensuring surgical accuracy across 7+ languages so your agents build with precision instead of wasting tokens on trial and error.",
       "version": "0.1.0"
     },
     {

docs/README.plugins.md

@@ -32,7 +32,7 @@ See [CONTRIBUTING.md](../CONTRIBUTING.md#adding-plugins) for guidelines on how t
 | [cast-imaging](../plugins/cast-imaging/README.md) | A comprehensive collection of specialized agents for software analysis, impact assessment, structural quality advisories, and architectural review using CAST Imaging. | 3 items | cast-imaging, software-analysis, architecture, quality, impact-analysis, devops |
 | [clojure-interactive-programming](../plugins/clojure-interactive-programming/README.md) | Tools for REPL-first Clojure workflows featuring Clojure instructions, the interactive programming chat mode and supporting guidance. | 2 items | clojure, repl, interactive-programming |
 | [context-engineering](../plugins/context-engineering/README.md) | Tools and techniques for maximizing GitHub Copilot effectiveness through better context management. Includes guidelines for structuring code, an agent for planning multi-file changes, and prompts for context-aware development. | 4 items | context, productivity, refactoring, best-practices, architecture |
-| [context-matic](../plugins/context-matic/README.md) | General-purpose AI models are trained on public code and documentation, much of it outdated. They have no awareness of an actual API version, latest SDKs, or recommended workflows. ContextMatic gives GitHub Copilot deterministic, version-aware API context generated directly from API definitions and SDKs. Instead of guessing from public examples, the agent is grounded in current SDK versions, idiomatic code samples, and recommended integration workflows. | 2 items | api-context, api-integration, mcp, sdk, apimatic, third-party-apis, sdks |
+| [context-matic](../plugins/context-matic/README.md) | ContextMatic turns your AI agents from API-guessers into API-experts. By feeding agents exact, version-aware SDK methods and typed models for providers like PayPal, Spotify, and Twilio, ContextMatic replaces guesswork and outdated training data with high-fidelity ground truth. This eliminates hallucinations and broken code, ensuring surgical accuracy across 7+ languages so your agents build with precision instead of wasting tokens on trial and error. | 2 items | api-context, api-integration, mcp, sdk, apimatic, third-party-apis, sdks |
 | [copilot-sdk](../plugins/copilot-sdk/README.md) | Build applications with the GitHub Copilot SDK across multiple programming languages. Includes comprehensive instructions for C#, Go, Node.js/TypeScript, and Python to help you create AI-powered applications. | 1 items | copilot-sdk, sdk, csharp, go, nodejs, typescript, python, ai, github-copilot |
 | [csharp-dotnet-development](../plugins/csharp-dotnet-development/README.md) | Essential prompts, instructions, and chat modes for C# and .NET development including testing, documentation, and best practices. | 9 items | csharp, dotnet, aspnet, testing |
 | [csharp-mcp-development](../plugins/csharp-mcp-development/README.md) | Complete toolkit for building Model Context Protocol (MCP) servers in C# using the official SDK. Includes instructions for best practices, a prompt for generating servers, and an expert chat mode for guidance. | 2 items | csharp, mcp, model-context-protocol, dotnet, server-development |

plugins/context-matic/.github/plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "context-matic",
-  "description": "General-purpose AI models are trained on public code and documentation, much of it outdated. They have no awareness of an actual API version, latest SDKs, or recommended workflows. ContextMatic gives GitHub Copilot deterministic, version-aware API context generated directly from API definitions and SDKs. Instead of guessing from public examples, the agent is grounded in current SDK versions, idiomatic code samples, and recommended integration workflows.",
+  "description": "ContextMatic turns your AI agents from API-guessers into API-experts. By feeding agents exact, version-aware SDK methods and typed models for providers like PayPal, Spotify, and Twilio, ContextMatic replaces guesswork and outdated training data with high-fidelity ground truth. This eliminates hallucinations and broken code, ensuring surgical accuracy across 7+ languages so your agents build with precision instead of wasting tokens on trial and error.",
   "version": "0.1.0",
   "keywords": [
     "api-context",