TASK-113041: Better clarification on message sameness for throttling

Signed-off-by: Doug Koerich <[email protected]>

Author: dkoerichbird

content/momentum/4/config/ref-debug-throttle.md

@@ -27,7 +27,8 @@ if the source of the message is something like this:
 ```
 
 then all messages that match this pattern will be considered the same for throttling purposes, regardless of the actual
-values of `<timestamp>` and `<mailfrom>`. This ensures that the throttling mechanism effectively reduces log noise while still capturing relevant information.
+values of `<timestamp>` and `<mailfrom>`. This happens because the default logging module is based on `printf`-style
+formatting, which allows variable content in log messages, and it is the formatting that determines message sameness.
 
 <a name="conf.ref.debug_throttle"></a>
 # Configuration options