chore: add language identifiers

src/content/docs/apm/agents/python-agent/python-agent-api/setbackgroundtask-python-agent-api.mdx

@@ -14,7 +14,7 @@ redirects:
 
 ## Syntax
 
-```
+```py
 newrelic.agent.set_background_task(flag=True)
 ```
 
@@ -74,16 +74,16 @@ None.
 
 An example of setting a web transaction to a non-web background task:
 
-```
+```py
 def wsgi_app(environ, start_response):
-   newrelic.agent.set_background_task()
+    newrelic.agent.set_background_task()
 ```
 
 ### Reclassifying a background task as a web transaction [#bg-task-example-2]
 
 Sometimes, you may want to instead classify a background task as a web transaction, so you can see it with your other application web transactions. To do that, add this call where a monitored background task executes:
 
-```
+```py
 import newrelic.agent
 newrelic.agent.set_background_task(False)
 ```