Fix URL rewrite check error for DevDot portal

Refer to job https://github.com/hashicorp/packer/actions/runs/7709708630/job/21011464094

website/content/docs/plugins/install-plugins.mdx

@@ -69,7 +69,7 @@ various outputs, like error messages.
 
 At initialization, Packer attempts to discover the plugins installed locally. The
 logic follows what's described in Configuring Packer's
-[plugin directory](https://developer.hashicorp.com/packer/docs/configure#packer-s-plugin-directory)
+[plugin directory](/packer/docs/configure#packer-s-plugin-directory)
 section.
 
 While Packer is not verbose during this step, you can peek into what it is discovering
@@ -208,7 +208,7 @@ packer plugins install github.com/hashicorp/vagrant
 
 The command will install the plugin in the `PACKER_CONFIG_DIR` set, or its
 default location, which depends on the OS/environment, as documented in
-[Configuring Packer](https://developer.hashicorp.com/packer/docs/configure#packer-s-plugin-directory).
+[Configuring Packer](/packer/docs/configure#packer-s-plugin-directory).
 
 </Tab>
 <Tab heading="Manual installation">
@@ -217,7 +217,7 @@ If you have obtained or built a plugin binary for your OS/Architecture and want
 use it with Packer, you can install it manually. For Packer to load the plugin,
 it must be named with the convention `packer-plugin-NAME`, and placed in Packer's plugin
 directory, as documented in
-[Configuring Packer](https://developer.hashicorp.com/packer/docs/configure#packer-s-plugin-directory).
+[Configuring Packer](/packer/docs/configure#packer-s-plugin-directory).
 
 For example, if your configuration directory is located in `~/.config/packer`,
 you can copy the binary to `~/.config/packer/plugins/packer-plugin-NAME`, and