Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

```
git subtree add --prefix=docs/ https://github.com/gohugoio/hugoDocs.git master --squash
```

Closes #11925

docs/content/en/commands/hugo_completion.md

@@ -0,0 +1,46 @@
+---
+title: "hugo completion"
+slug: hugo_completion
+url: /commands/hugo_completion/
+---
+## hugo completion
+
+Generate the autocompletion script for the specified shell
+
+### Synopsis
+
+Generate the autocompletion script for hugo for the specified shell.
+See each sub-command's help for details on how to use the generated script.
+
+
+### Options
+
+```
+  -h, --help   help for completion
+```
+
+### Options inherited from parent commands
+
+```
+      --clock string               set the clock used by Hugo, e.g. --clock 2021-11-06T22:30:00.00+09:00
+      --config string              config file (default is hugo.yaml|json|toml)
+      --configDir string           config dir (default "config")
+      --debug                      debug output
+  -d, --destination string         filesystem path to write files to
+  -e, --environment string         build environment
+      --ignoreVendorPaths string   ignores any _vendor for module paths matching the given Glob pattern
+      --logLevel string            log level (debug|info|warn|error)
+      --quiet                      build in quiet mode
+  -s, --source string              filesystem path to read files relative from
+      --themesDir string           filesystem path to themes directory
+  -v, --verbose                    verbose output
+```
+
+### SEE ALSO
+
+* [hugo](/commands/hugo/)	 - hugo builds your site
+* [hugo completion bash](/commands/hugo_completion_bash/)	 - Generate the autocompletion script for bash
+* [hugo completion fish](/commands/hugo_completion_fish/)	 - Generate the autocompletion script for fish
+* [hugo completion powershell](/commands/hugo_completion_powershell/)	 - Generate the autocompletion script for powershell
+* [hugo completion zsh](/commands/hugo_completion_zsh/)	 - Generate the autocompletion script for zsh
+