Updated Setting up Search (markdown)

Setting-up-Search.md

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 ### `ripgrep` *(the default)*
 
 If you do not already have `ripgrep` installed, follow the [instructions here](https://github.com/BurntSushi/ripgrep#installation) to get it.
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 ### `ripgrep-all` (aka `rga`)
 
 The same as ripgrep except that it supports searching more binary filetypes like PDFs, eBooks, Office documents, zip, tar.gz, etc.
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 ### `ugrep`
 
 Not tested by the ArchiveBox team but it's very similar to `ripgrep` and may work as a drop-in replacement, with some caveats. (contributions welcome to improve support)
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 ### `sonic` ⭐️ (the recommended upgrade path for most people)
 
 [Sonic](https://github.com/valeriansaliou/sonic) is a fast, lightweight, rust-based alternative to super-heavy traditional search backends like Elasticsearch. It is capable of normalizing natural language search queries, fuzzy matching, and searching Unicode, without needing to maintain a duplicate document store index of all the searchable text.
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 ### `SQLite FTS5`
 
 This is a [recently added](https://github.com/ArchiveBox/ArchiveBox/pull/1241) experimental option that uses a separate SQLite3 Database (similar to the one ArchiveBox already uses for Snapshot metadata) to provide full-text search.