remove mention of ctx.log from addon example (#6552)

[#5590](https://github.com/mitmproxy/mitmproxy/pull/5590) made the
switch to standard logging, but this part of the addons documentation
references the previous `ctx.log` approach.

CHANGELOG.md

@@ -7,6 +7,8 @@
 
 ## Unreleased: mitmproxy next
 
+* Remove stale reference to `ctx.log` in addon documentation.
+  ([#6552](https://github.com/mitmproxy/mitmproxy/pull/6552), @brojonat)
 * Fix a bug where a traceback is shown during shutdown.
   ([#6581](https://github.com/mitmproxy/mitmproxy/pull/6581), @mhils)
 

docs/src/content/addons-overview.md

@@ -25,9 +25,9 @@ them to keys in the interactive tools.
 {{< example src="examples/addons/anatomy.py" lang="py" >}}
 
 Above is a simple addon that keeps track of the number of flows (or more
-specifically HTTP requests) we've seen. Every time it sees a new flow, it uses
-mitmproxy's internal logging mechanism to announce its tally. The output can be
-found in the event log in the interactive tools, or on the console in mitmdump.
+specifically HTTP requests) we've seen. Every time it sees a new flow, it
+increments and logs its tally. The output can be found in the event log in the
+interactive tools, or on the console in mitmdump.
 
 Take it for a spin and make sure that it does what it's supposed to, by loading
 it into your mitmproxy tool of choice. We'll use mitmdump in these examples,
@@ -45,11 +45,6 @@ Here are a few things to note about the code above:
 - The `request` method is an example of an *event*. Addons simply implement a
   method for each event they want to handle. Each event and its signature are documented
   in the [API documentation]({{< relref "addons-api" >}}).
-- Finally, the `ctx` module is a holdall module that exposes a set of standard
-  objects that are commonly used in addons. We could pass a `ctx` object as the
-  first parameter to every event, but we've found it neater to just expose it as
-  an importable global. In this case, we're using the `ctx.log` object to do our
-  logging.
 
 # Abbreviated Scripting Syntax
 

mitmproxy/ctx.py

@@ -7,6 +7,8 @@ if typing.TYPE_CHECKING:
     import mitmproxy.master
     import mitmproxy.options
 
-log: mitmproxy.log.Log
 master: mitmproxy.master.Master
 options: mitmproxy.options.Options
+
+log: mitmproxy.log.Log
+"""Deprecated: Use Python's builtin `logging` module instead."""