chore: add language identifiers, +link

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

@@ -14,7 +14,7 @@ redirects:
 
 ## Syntax
 
-```
+```py
 newrelic.agent.create_distributed_trace_payload()
 ```
 
@@ -25,7 +25,7 @@ This method is used for generating payloads used to connect transactions within
 Python agent version 4.2.0.100 or higher.
 
 <Callout variant="caution">
-  This API has been deprecated. Please use newrelic.agent.insert_distributed_trace_headers instead.
+  This API has been deprecated. Please use [`newrelic.agent.insert_distributed_trace_headers`](/docs/apm/agents/python-agent/python-agent-api/insertdistributedtraceheaders-python-agent-api) instead.
 </Callout>
 
 Distributed tracing must be [enabled](/docs/enable-distributed-tracing#python).
@@ -40,7 +40,7 @@ This call is used to implement distributed tracing. It generates a payload that
 
 ## Return values
 
-When successful, returns a `DistributedTracePayload` object, which inherits from Python's builtin `dict` type and has the following additional methods:
+When successful, returns a `DistributedTracePayload` object, which inherits from Python's built in `dict` type and has the following additional methods:
 
 * `text`: Generate a JSON encoded string version of the payload.
 * `http_safe`: Generate a base64 encoded string version of the payload.
@@ -57,13 +57,12 @@ When unsuccessful, returns `None`. This can happen when distributed tracing is n
 
 An example of using `create_distributed_trace_payload` in creating two [external traces](/docs/agents/python-agent/python-agent-api/external-trace) from within single a background task:
 
-```
+```py
 @newrelic.agent.background_task()
 def main(url):
     header_key = newrelic.agent.ExternalTrace.cat_distributed_trace_key
 
-    with newrelic.agent.ExternalTrace('my_external_library',
-            url, method='GET'):
+    with newrelic.agent.ExternalTrace('my_external_library', url, method='GET'):
         # Generate the payload in the context of the ExternalTrace
         # span that sends it
         payload = newrelic.agent.create_distributed_trace_payload()
@@ -72,8 +71,7 @@ def main(url):
 
     data = _process_response(response)
 
-    with newrelic.agent.ExternalTrace('my_external_library',
-            url, method='POST'):
+    with newrelic.agent.ExternalTrace('my_external_library', url, method='POST'):
         # Generate the payload in the context of the ExternalTrace
         # span that sends it
         payload = newrelic.agent.create_distributed_trace_payload()
@@ -85,7 +83,7 @@ def main(url):
 
 An example of using `create_distributed_trace_payload` in creating an [external trace](/docs/agents/python-agent/python-agent-api/external-trace):
 
-```
+```py
 def _bind_url(url, *args, **kwargs):
     # _bind_url is called with the args and kwargs sent to the `get`
     # method below