Update BG names where applicable

docs/custom_things/animation.md

@@ -169,7 +169,7 @@ init +100 python:
     my_custom_transition = MyCustomTransition(direct_path("example_asset arrow"))
 
 label day1:
-    scene bg school exterior day
+    scene bg school field day
     with my_custom_transition
 
     "This is a test sentence."

docs/custom_things/commands.md

@@ -329,7 +329,7 @@ If a value can contain multiple values, it is enclosed by `&&`, e.g. `&<value_a>
 
 === "Example"
     ```
-    phone_call john @ bg main room day shut : katrina @ bg school entrance day
+    phone_call john @ bg house_davis bedroom_john day_shut : katrina @ bg school entrance day
     ```
 
 ## `pauseaudio`

docs/scenario_guide/animation.md

@@ -85,7 +85,7 @@ scry into john
 
 "Some narration"
 
-scene bg main kitchen night
+scene bg house_davis kitchen night
 show abby a_0 at right
 show katrina a_0 at center
 scry outof abby

docs/scenario_guide/characters_and_images.md

@@ -288,7 +288,7 @@ The game includes an array of background images you can use. You can find a list
 
 Showing a background will generally look like this:
 ```
-scene bg main house day
+scene bg house_davis exterior day
 ```
 
 The `scene` keyword is similar to the `show` statement, with the added bonus that it removes all previous images from the screen. If you set a `scene`, the screen will be blank except for the background image.

docs/scenario_guide/tips_tricks_and_lifehacks.md

@@ -41,7 +41,7 @@ While we added the ability to chat via text messages in the last update, we have
 ??? example "Making a phone call in Student Transfer"
     Using the statement below
     ```python
-    phone_call john @ bg main room day shut : katrina @ bg main kitchen day
+    phone_call john @ bg house_davis bedroom_john day_shut : katrina @ bg house_davis kitchen day
     ```
     will result in the following visualization:
     ![Visualization of a phone call](../images/phone_call/phone_call.png)