#14036: Update import paths in example plugin code

Author: jeremystretch

docs/plugins/development/index.md

@@ -69,7 +69,7 @@ The plugin source directory contains all the actual Python code and other resour
 The `PluginConfig` class is a NetBox-specific wrapper around Django's built-in [`AppConfig`](https://docs.djangoproject.com/en/stable/ref/applications/) class. It is used to declare NetBox plugin functionality within a Python package. Each plugin should provide its own subclass, defining its name, metadata, and default and required configuration parameters. An example is below:
 
 ```python
-from extras.plugins import PluginConfig
+from netbox.plugins import PluginConfig
 
 class FooBarConfig(PluginConfig):
     name = 'foo_bar'
@@ -121,7 +121,7 @@ All required settings must be configured by the user. If a configuration paramet
     Plugin configuration parameters can be accessed using the `get_plugin_config()` function. For example:
 
     ```python
-    from extras.plugins import get_plugin_config
+    from netbox.plugins import get_plugin_config
     get_plugin_config('my_plugin', 'verbose_name')
     ```
 

docs/plugins/development/navigation.md

@@ -5,7 +5,7 @@
 A plugin can register its own submenu as part of NetBox's navigation menu. This is done by defining a variable named `menu` in `navigation.py`, pointing to an instance of the `PluginMenu` class. Each menu must define a label and grouped menu items (discussed below), and may optionally specify an icon. An example is shown below.
 
 ```python title="navigation.py"
-from extras.plugins import PluginMenu
+from netbox.plugins import PluginMenu
 
 menu = PluginMenu(
     label='My Plugin',
@@ -49,7 +49,7 @@ menu_items = (item1, item2, item3)
 Each menu item represents a link and (optionally) a set of buttons comprising one entry in NetBox's navigation menu. Menu items are defined as PluginMenuItem instances. An example is shown below.
 
 ```python title="navigation.py"
-from extras.plugins import PluginMenuButton, PluginMenuItem
+from netbox.plugins import PluginMenuButton, PluginMenuItem
 from utilities.choices import ButtonColorChoices
 
 item1 = PluginMenuItem(

docs/plugins/development/views.md

@@ -206,7 +206,7 @@ For example, accessing `{{ request.user }}` within a template will return the cu
 Declared subclasses should be gathered into a list or tuple for integration with NetBox. By default, NetBox looks for an iterable named `template_extensions` within a `template_content.py` file. (This can be overridden by setting `template_extensions` to a custom value on the plugin's PluginConfig.) An example is below.
 
 ```python
-from extras.plugins import PluginTemplateExtension
+from netbox.plugins import PluginTemplateExtension
 from .models import Animal
 
 class SiteAnimalCount(PluginTemplateExtension):