Implement MDX Remote (#10581)

* implement mdx remote

* fix an unfenced code block

* fix partials path

Co-authored-by: Jim Kalafut <jkalafut@hashicorp.com>

website/content/docs/commands/plugin/register.mdx

@@ -0,0 +1,54 @@
+---
+layout: docs
+page_title: plugin register - Command
+sidebar_title: <code>register</code>
+description: |-
+  The "plugin register" command registers a new plugin in Vault's plugin
+  catalog.
+---
+
+# plugin register
+
+The `plugin register` command registers a new plugin in Vault's plugin catalog.
+The plugin's type of "auth", "database", or "secret" must be included.
+
+## Examples
+
+Register a plugin:
+
+```shell-session
+$ vault plugin register \
+    -sha256=d3f0a8be02f6c074cf38c9c99d4d04c9c6466249 \
+    auth my-custom-plugin
+Success! Registered plugin: my-custom-plugin
+```
+
+Register a plugin with custom args:
+
+```shell-session
+$ vault plugin register \
+    -sha256=d3f0a8be02f6c074cf38c9c99d4d04c9c6466249 \
+    -args=--with-glibc,--with-curl-bindings \
+    auth my-custom-plugin
+```
+
+## Usage
+
+The following flags are available in addition to the [standard set of
+flags](/docs/commands) included on all commands.
+
+### Output Options
+
+- `-format` `(string: "table")` - Print the output in the given format. Valid
+  formats are "table", "json", or "yaml". This can also be specified via the
+  `VAULT_FORMAT` environment variable.
+
+### Command Options
+
+- `-sha256` `(string: <required>)` - Checksum (SHA256) of the plugin binary.
+
+- `-args` `(string: "")` - List of arguments to pass to the binary plugin during
+  each invocation. Specify multiple arguments with commas.
+
+- `-command` `(string: "")` - Name of the command to run to invoke the binary.
+  By default, this is the name of the plugin.