docs: rename CLI section to Local Development + move in linking docs

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

docs/plugins/create-a-plugin.md

@@ -10,7 +10,8 @@ A Backstage Plugin adds functionality to Backstage.
 
 To create a new plugin, make sure you've run `yarn install` and installed
 dependencies, then run the following on your command line (a shortcut to
-invoking the [`backstage-cli create-plugin`](../cli/commands.md#create-plugin))
+invoking the
+[`backstage-cli create-plugin`](../local-dev/cli-commands.md#create-plugin))
 from the root of your project.
 
 ```bash

docs/plugins/github-apps.md

@@ -36,7 +36,7 @@ that we provide. This gives us a way to automate some of the work required to
 create a GitHub app.
 
 You can read more about the
-[`backstage-cli create-github-app` method](../cli/commands.md#create-github-app).
+[`backstage-cli create-github-app` method](../local-dev/cli-commands.md#create-github-app).
 
 Once you've gone through the CLI command, it should produce a YAML file in the
 root of the project which you can then use as an `include` in your