docs: update cli description

Author: OrKoN

README.md

@@ -471,7 +471,7 @@ The Chrome DevTools MCP server supports the following configuration option:
   - **Default:** `true`
 
 - **`--performanceCrux`/ `--performance-crux`**
-  Set to false to disable CrUX (field data) integration in performance tools.
+  Set to false to disable sending URLs from performance traces to CrUX API to get field performance data.
   - **Type:** boolean
   - **Default:** `true`
 

src/cli.ts

@@ -208,7 +208,7 @@ export const cliOptions = {
     type: 'boolean',
     default: true,
     describe:
-      'Set to false to disable CrUX (field data) integration in performance tools.',
+      'Set to false to disable sending URLs from performance traces to CrUX API to get field performance data.',
   },
   usageStatistics: {
     type: 'boolean',