docs: sync metadata.md with latest plugin.schema.json

docusaurus/docs/reference/metadata.md

@@ -33,6 +33,7 @@ The `plugin.json` file is required for all plugins. When Grafana starts, it scan
 | **buildMode**                                 | `string`   | The build mode of the plugin. This field is set automatically at build time, so it should not be provided manually.<br/>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |          |
 | **builtIn**                                   | `boolean`  | [internal only] Indicates whether the plugin is developed and shipped as part of Grafana. Also known as a 'core plugin'.<br/>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |          |
 | **category**                                  | `string`   | Plugin category used on the Add new connection page. Can be one from the list: "tsdb", "logging", "cloud", "tracing", "profiling", "sql", "enterprise", "iot", "other", empty string or custom string<br/>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |
+| **docsPath**                                  | `string`   | Path to the directory containing plugin documentation.<br/>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |
 | [**enterpriseFeatures**](#enterprisefeatures) | `object`   | Grafana Enterprise specific features<br/>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |          |
 | **executable**                                | `string`   | The first part of the file name of the backend component executable. There can be multiple executables built for different operating system and architecture. Grafana will check for executables named `<executable>_<$GOOS>_<lower case $GOARCH><.exe for Windows>`, e.g. `plugin_linux_amd64`. Combination of $GOOS and $GOARCH can be found here: https://golang.org/doc/install/source#environment.<br/>                                                                                                                                                                                                                                                                                                                                     |          |
 | **hideFromList**                              | `boolean`  | [internal only] Excludes the plugin from listings in Grafana's UI. Only allowed for `builtIn` plugins.<br/>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |