Clarify the 'Presets' setting description to emphasize editing presets as JSON

Author: robertpiosik

README.md

@@ -118,7 +118,7 @@ Generate meaningful commit messages precisely adhering to your preferred style.
 
 - `Code Web Chat: Ignored Extensions` - List of file extensions to ignore in the context.
 
-- `Code Web Chat: Presets` - A preset is a general or task specific web chat configuration.
+- `Code Web Chat: Presets` - Conveniently edit chat presets as saved in JSON.
 
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