Update index.md

[pitermarx]

Add user

I have a large history of posts, and the search feature is a bit slow for me.
If you could take a look I would appreciate it!

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[pitermarx]

I did this to minimize the effect on my site
pitermarx/pitermarx.github.io@4d62285

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[jpanther]

Thanks for using Congo, @pitermarx! I'll merge this change in and your site will appear on the public list when the next theme release is published.

I do like your loading state for the search function too. I'd be happy to look at a PR for that to be included as an enhancement if you'd like to submit it.