Nushell 0.86 release notes: fix grammar "to now about" → "to know about" (#1111)

Author: das-g

blog/2023-10-17-nushell_0_86.md

@@ -354,7 +354,7 @@ open /etc/passwd | lines | split column ":" user . uid gid desc home shell | int
 - to get the content of the default config files of Nushell without overwritting the true `config.nu`
   and `env.nu`, [@poliorcetics](https://github.com/poliorcetics) have added the `--default` option to
   both `config nu` and `config env` in [#10480](https://github.com/nushell/nushell/pull/10480)
-- to now about all the available escapes that Nushell supports, [@vedaRadev](https://github.com/vedaRadev)
+- to know about all the available escapes that Nushell supports, [@vedaRadev](https://github.com/vedaRadev)
   have added `help escapes` in [#10522](https://github.com/nushell/nushell/pull/10522)
 - tired of crawling the internet or computing series of number with loops and mutable variables?
   [@hudclark](https://github.com/hudclark) got your back with the new `unfold` command from [#10489](https://github.com/nushell/nushell/pull/10489)!