Kitchensink: missing example file to showcase "Log" format

### Describe the bug

Hi,
When selecting "Log" from "Document" dropdown, we receive HTML document stating that the file was not found.
Apparently https://github.com/ajaxorg/ace/tree/master/demo/kitchen-sink/docs does not contain proper file.

### Expected Behavior

Show example log file when selecting "Log" from "Document" dropdown

### Current Behavior

We see HTML with error message informing that the example Log file wasn't found

### Reproduction Steps

Open https://ace.c9.io/build/kitchen-sink.html
Select "Log" from "Document" dropdown

### Possible Solution

_No response_

### Additional Information/Context

_No response_

### Ace Version / Browser / OS / Keyboard layout

Current Kitchensink, independent from OS/Browser etc.