docs: update number of commands (57 -> 58) with addition of jsonp

[skip ci]

README.md

@@ -430,7 +430,7 @@ Dual-licensed under MIT or the [UNLICENSE](https://unlicense.org).
 
 ## Origins
 
-Quicksilver (qsv) is a fork of the popular [xsv](https://github.com/BurntSushi/xsv) utility, merging several pending PRs [since xsv 0.13.0's May 2018 release](https://github.com/BurntSushi/xsv/issues/267). On top of xsv's 20 commands, it adds numerous new features; 37 additional commands; 4 `apply` subcommands & 36 operations; 5 `to` subcommands; 3 `cat` subcommands; 7 `geocode` subcommands & 4 index operations; and 4 `snappy` subcommands.
+Quicksilver (qsv) is a fork of the popular [xsv](https://github.com/BurntSushi/xsv) utility, merging several pending PRs [since xsv 0.13.0's May 2018 release](https://github.com/BurntSushi/xsv/issues/267). On top of xsv's 20 commands, it adds numerous new features; 38 additional commands; 4 `apply` subcommands & 36 operations; 5 `to` subcommands; 3 `cat` subcommands; 7 `geocode` subcommands & 4 index operations; and 4 `snappy` subcommands.
 See [FAQ](https://github.com/jqnatividad/qsv/discussions/categories/faq) for more details.
 
 ## Sponsor