This pull request updates the documentation for recipe parameter input types, clarifying the behavior of the file input type and providing a practical example. The changes make it easier for users to understand how to use file parameters in recipes and highlight important security considerations.

Documentation improvements for recipe parameters:

• Clarified the input_type field in the parameters table to specify that it accepts "string" (default) or "file" (reads file contents).
• Added a new "Input Types" section explaining the difference between string and file types, including a YAML example showing how to use a file parameter in a recipe.
• Emphasized that file parameters cannot have default values to prevent accidental importing of sensitive files, and removed a redundant "File Parameter Type" subsection to streamline the documentation.