Update manpage and completions.

Autogenerated by the [sponsors-maintainers-man-completions](https://github.com/Homebrew/brew/blob/HEAD/.github/workflows/sponsors-maintainers-man-completions.yml) workflow.

completions/internal_commands_list.txt

@@ -86,6 +86,7 @@ rm
 rubocop
 ruby
 search
+setup-ruby
 sh
 shellenv
 style

completions/zsh/_brew

@@ -205,6 +205,7 @@ __brew_internal_commands() {
     'rubocop:Installs, configures and runs Homebrew'\''s `rubocop`'
     'ruby:Run a Ruby instance with Homebrew'\''s libraries loaded'
     'search:Perform a substring search of cask tokens and formula names for text'
+    'setup-ruby:Installs and configures Homebrew'\''s Ruby'
     'sh:Enter an interactive shell for Homebrew'\''s build environment'
     'shellenv:Print export statements'
     'style:Check formulae or files for conformance to Homebrew style guidelines'

docs/Manpage.md

@@ -663,6 +663,10 @@ is flanked by slashes, it is interpreted as a regular expression.
 * `--ubuntu`:
   Search for *`text`* in the given database.
 
+### `setup-ruby`
+
+Installs and configures Homebrew's Ruby.
+
 ### `shellenv [bash|csh|fish|pwsh|sh|tcsh|zsh]`
 
 Print export statements. When run in a shell, this installation of Homebrew will be added to your `PATH`, `MANPATH`, and `INFOPATH`.

manpages/brew.1

@@ -944,6 +944,9 @@ Search for \fItext\fR in the given database\.
 \fB\-\-ubuntu\fR
 Search for \fItext\fR in the given database\.
 .
+.SS "\fBsetup\-ruby\fR"
+Installs and configures Homebrew\'s Ruby\.
+.
 .SS "\fBshellenv [bash|csh|fish|pwsh|sh|tcsh|zsh]\fR"
 Print export statements\. When run in a shell, this installation of Homebrew will be added to your \fBPATH\fR, \fBMANPATH\fR, and \fBINFOPATH\fR\.
 .