chore: add language identifiers

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

@@ -13,7 +13,7 @@ redirects:
 
 ## Syntax [#syntax]
 
-```
+```py
 newrelic.agent.set_error_group_callback(callback_function(exc))
 ```
 
@@ -113,24 +113,23 @@ When unsuccessful, the API will not add `error.group.name` as an agent attribute
 
 An example of using `set_error_group_callback`:
 
-```
+```py
 def customer_callback(exc):
-  if isinstance(exc,ValueError):
-    return "group1"
+    if isinstance(exc,ValueError):
+        return "group1"
 
 
 def some_other_function():
-  try:
-    raise ValueError("Oh no!")
-  except Exception:
-    newrelic.agent.notice_error()
+    try:
+        raise ValueError("Oh no!")
+    except Exception:
+       newrelic.agent.notice_error()
 
 
 def example_function(customer_callback):
-  try:
-    newrelic.agent.set_error_group_callback(customer_callback)
-    some_other_function()
-  finally:
-    newrelic.agent.set_error_group_callback(None)
-
+    try:
+        newrelic.agent.set_error_group_callback(customer_callback)
+        some_other_function()
+    finally:
+        newrelic.agent.set_error_group_callback(None)
 ```