Example adjustments for doc consumption

[goodroot]

Adds another example path & alters from-conf to match expectations.

For posterity, from docusaurus:

Error: Could not load code from https://raw.githubusercontent.com/questdb/go-questdb-client/main/examples/http/from-conf/main.go: Error 404
    at Object.loadContent (/Users/goodroot/Code/questdb.io/plugins/remote-repo-example/index.js:63:17)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async /Users/goodroot/Code/questdb.io/node_modules/@docusaurus/core/lib/server/plugins/index.js:53:46
    at async Promise.all (index 6)
    at async Object.loadPlugins (/Users/goodroot/Code/questdb.io/node_modules/@docusaurus/core/lib/server/plugins/index.js:52:34)
    at async Object.load (/Users/goodroot/Code/questdb.io/node_modules/@docusaurus/core/lib/server/index.js:94:82)