📝 update tab-autocomplete documentation

docs/docs/walkthroughs/tab-autocomplete.md

@@ -40,7 +40,15 @@ This is just another object like the ones in the `"models"` array of `config.jso
 
 ### `tabAutocompleteOptions`
 
-Empty for now. Let use know what you'd like access to!
+This object allows you to customize the behavior of tab-autocomplete. The available options are:
+
+- `useCopyBuffer`: Determines whether the copy buffer will be considered when constructing the prompt. (Boolean)
+- `useSuffix`: Determines whether to use the file suffix in the prompt. (Boolean)
+- `maxPromptTokens`: The maximum number of prompt tokens to use. A smaller number will yield faster completions, but less context. (Number)
+- `debounceDelay`: The delay in milliseconds before triggering autocomplete after a keystroke. (Number)
+- `maxSuffixPercentage`: The maximum percentage of the prompt that can be dedicated to the suffix. (Number)
+- `prefixPercentage`: The percentage of the input that should be dedicated to the prefix. (Number)
+- `template`: An optional template string to be used for autocomplete. It will be rendered with the Mustache templating language, and is passed the 'prefix' and 'suffix' variables. (String)
 
 ## Troubleshooting