fix: markdown lint language identifier, rename describe block to match file

Author: angiejones

AGENTS.md

@@ -4,7 +4,7 @@ MCP server for Selenium WebDriver browser automation. JavaScript (ES Modules), N
 
 ## File Map
 
-```
+```text
 src/lib/server.js      ← ALL server logic: tool definitions, state, helpers, cleanup
 src/index.js           ← Thin CLI wrapper, spawns server.js as child process
 test/mcp-client.mjs    ← Reusable MCP test client (JSON-RPC over stdio)

test/tools.test.mjs

@@ -10,7 +10,7 @@ import { describe, it, before, after } from 'node:test';
 import assert from 'node:assert/strict';
 import { McpClient, getResponseText, fixture } from './mcp-client.mjs';
 
-describe('new-tools', () => {
+describe('tools', () => {
   let client;
 
   before(async () => {