fix: update ENRICHMENT enum value to 'enrich_metadata'

[fabiobarcelona]

What does this PR do?

Currently, the MCP Server is failing to connect when using the enrich_metadata toolset due to a mismatch between the docs and the Toolset enum, using enrichment instead works as expect. Here are the logs I got from debugging a Claude Code session:

 »   Error: Expected --toolsets=enrich_metadata to be one of: all, core, data, 
 »   orgs, metadata, testing, users, mobile, mobile-core, aura-experts, 
 »   lwc-experts, devops, code-analysis, scale-products, enrichment, other
 »   See more help with --help
2026-03-29T22:33:16.182Z [DEBUG] MCP server "Salesforce DX": Connection failed after 12733ms: MCP error -32000: Connection closed

This is the .mcp.json file I used:

{
    "mcpServers": {
        "Salesforce DX": {
            "type": "stdio",
            "command": "cmd",
            "args": [
                "/c",
                "npx",
                "-y",
                "@salesforce/mcp@latest",
                "--orgs",
                "DEFAULT_TARGET_ORG",
                "--toolsets",
                "core,data,enrich_metadata,lwc-experts,metadata,scale-products,testing",
                "--allow-non-ga-tools"
            ]
        }
    }
}

[salesforce-cla]

Thanks for the contribution! Before we can merge this, we need @fabiobarcelona to sign the Salesforce Inc. Contributor License Agreement.

[iowillhoit]

Hey @fabiobarcelona, thank you so much for this PR! This is actually a docs issue, we want the --toolset to be enrichment. The owning team submitted this PR #437 to correct the docs. Thanks for bring this to our attention