Running `doc-kit generate` with no arguments or config should generate help

[bmuenzenmeyer]

pnpm exec doc-kit generate   
[13:28:53.637] ERROR: Cannot read properties of undefined (reading 'join')
TypeError: Cannot read properties of undefined (reading 'join')
    at runGenerators (file:///Users/brian/Documents/doc-kit-testing/node_modules/.pnpm/@node-core+doc-kit@1.3.10_@orama+core@1.2.19_@types+react@19.2.17_react-dom@19.2.7_react@19.2.7__react@19.2.7/node_modules/@node-core/doc-kit/src/generators.mjs:99:30)
    at file:///Users/brian/Documents/doc-kit-testing/node_modules/.pnpm/@node-core+doc-kit@1.3.10_@orama+core@1.2.19_@types+react@19.2.17_react-dom@19.2.7_react@19.2.7__react@19.2.7/node_modules/@node-core/doc-kit/bin/commands/generate.mjs:65:13
    at process.processTicksAndRejections (node:internal/process/task_queues:103:5)
    at async Command.<anonymous> (file:///Users/brian/Documents/doc-kit-testing/node_modules/.pnpm/@node-core+doc-kit@1.3.10_@orama+core@1.2.19_@types+react@19.2.17_react-dom@19.2.7_react@19.2.7__react@19.2.7/node_modules/@node-core/doc-kit/bin/utils.mjs:13:14)%