Update help text and completions

docs/cli/cd.adoc

-Change directory to root or plugin/theme directory.
+Change directory to root or package directory.
 
 == USAGE
-  omf cd                                Change to Oh My Fish root folder
-  omf cd <package name> | <theme name>  Change to plugin or theme directory by name
+  omf cd                Change to Oh My Fish root folder
+  omf cd <package>      Change to package directory by name
 
 == EXAMPLES
   omf cd

docs/cli/new.adoc

 Create a new package from a template.
 
 == USAGE
-  omf new (_pkg_ | _theme_) _<name>_  Create a new package from a template
+  omf new (_pkg_ | _theme_) <name>  Create a new package from a template
 
 == OPTIONS
 

docs/cli/reload.adoc

@@ -4,4 +4,4 @@ Reload the current shell.
   omf reload
 
 == DESCRIPTION
-Reload Oh My Fish and all plugins by using exec to replace current shell process with a brand new process. This command tries to be as safe as possible, mitigating side-effects caused by exec and preventing the reload in case of background processes.
+Reload Oh My Fish and all plugins by using `exec` to replace current shell process with a brand new process. This command tries to be as safe as possible, mitigating side-effects caused by exec and preventing the reload in case of background processes.

docs/cli/remove.adoc

-Remove a theme or package.
+Remove a package.
 
 == USAGE
-  omf remove _<package name>_ | _<theme name>_  Removes a theme or package by name
+  omf remove <package>
 
 == EXAMPLES
   omf remove brew

pkg/omf/completions/omf.fish

@@ -27,22 +27,24 @@ end
 complete -c omf -f -n "__fish_seen_subcommand_from d desc describe" -a (printf "%s " (omf.index.query --type=plugin))
 complete -c omf -f -n "__fish_seen_subcommand_from t theme"         -a "$installed_themes"
 complete -c omf -f -n "__fish_seen_subcommand_from channel"         -a "stable dev"
-complete -c omf -f -n "__fish_seen_subcommand_from help"            -a "install theme remove update list describe cd new destroy doctor repositories"
+complete -c omf -f -n "__fish_seen_subcommand_from help"            -a "cd channel describe destroy doctor help install get list ls new reload remove uninstall repo repositories search theme update version"
 
-complete -c omf -f -a list     -n "__fish_use_subcommand" -d "List local packages"
+complete -c omf -f -a cd       -n "__fish_use_subcommand" -d "Change directory to plugin/theme directory"
+complete -c omf -f -a channel  -n "__fish_use_subcommand" -d "Gets or changes the update channel"
 complete -c omf -f -a describe -n "__fish_use_subcommand" -d "Get information about what packages do"
+complete -c omf -f -a destroy  -n "__fish_use_subcommand" -d "Remove Oh My Fish"
+complete -c omf -f -a doctor   -n "__fish_use_subcommand" -d "Troubleshoot Oh My Fish"
+complete -c omf -f -a help     -n "__fish_use_subcommand" -d "Display this help"
 complete -c omf -f -a install  -n "__fish_use_subcommand" -d "Install one or more packages"
-complete -c omf -f -a theme    -n "__fish_use_subcommand" -d "List / Use themes"
+complete -c omf -f -a list     -n "__fish_use_subcommand" -d "List local packages"
+complete -c omf -f -a new      -n "__fish_use_subcommand" -d "Create a new package from a template"
+complete -c omf -f -a reload   -n "__fish_use_subcommand" -d "Reload the current shell"
 complete -c omf -f -a remove   -n "__fish_use_subcommand" -d "Remove a theme or package"
-complete -c omf -f -a update   -n "__fish_use_subcommand" -d "Update Oh My Fish"
 complete -c omf -f -a repositories -n "__fish_use_subcommand" -d "Manage package repositories"
-complete -c omf -f -n "__fish_seen_subcommand_from repo repositories; and __omf_assert_args_count 1" -a list -d "List installed repositories"
 complete -c omf -f -n "__fish_seen_subcommand_from repo repositories; and __omf_assert_args_count 1" -a add -d "Add a package repository"
+complete -c omf -f -n "__fish_seen_subcommand_from repo repositories; and __omf_assert_args_count 1" -a list -d "List installed repositories"
 complete -c omf -f -n "__fish_seen_subcommand_from repo repositories; and __omf_assert_args_count 1" -a remove -d "Remove a package repository"
-complete -c omf -f -a cd       -n "__fish_use_subcommand" -d "Change directory to plugin/theme directory"
-complete -c omf -f -a new      -n "__fish_use_subcommand" -d "Create a new package from a template"
-complete -c omf -f -a search   -n "__fish_use_subcommand" -d "Search the database for a theme, package or both"
-complete -c omf -f -a help     -n "__fish_use_subcommand" -d "Display this help"
-complete -c omf -f -a destroy  -n "__fish_use_subcommand" -d "Remove Oh My Fish"
-complete -c omf -f -a doctor   -n "__fish_use_subcommand" -d "Troubleshoot Oh My Fish"
-complete -c omf -f -a channel  -n "__fish_use_subcommand" -d "Gets or changes the update channel"
+complete -c omf -f -a search   -n "__fish_use_subcommand" -d "Search for a plugin or theme"
+complete -c omf -f -a theme    -n "__fish_use_subcommand" -d "Install and list themes"
+complete -c omf -f -a update   -n "__fish_use_subcommand" -d "Update Oh My Fish"
+complete -c omf -f -a version  -n "__fish_use_subcommand" -d "Display version"