chore(doc): auto generate docs

Author: github-actions[bot]

doc/CopilotChat.txt

@@ -541,6 +541,7 @@ Below are all available configuration options with their default values:
         title = 'Copilot Chat', -- title of chat window
         footer = nil, -- footer of chat window
         zindex = 1, -- determines if window is on top or below other floating windows
+        blend = 0, -- window blend (transparency), 0-100, 0 is opaque, 100 is fully transparent
       },
 
       show_help = true, -- Shows help message as virtual lines when waiting for user input