Fix docstring Args names that do not match the signatures

[darkdi]

Twenty-six Args: entries name a parameter the function does not have. Docstring only — no behaviour changes, no signatures touched.

Most are plain renames where the docstring kept the old name:

Where	Documented	Actual
_binary_encode.encode_none	datum	_datum
_loop.loop_from_index	bool	wrap
_styles_cache.render_widget	region	crop
containers.ScrollableContainer	can_maximized	can_maximize
BoxProperty.__set__	value	border
SpacingProperty.__set__	style	spacing
FractionalProperty.__get__	objtype	type
SyntaxAwareDocument.get_line	line_index	index
Driver.process_message	event	message
LinuxDriver._patch_lflag (and the inline driver)	attributes	attrs
WidgetPlacement.translate	offset	translate_offset
Screen.arrange	optimal	_optimal
Padding.__init__	Visual	visual
walk_selectable_widgets	bounded	containers
ChopsUpdate.__init__	crop	spans
FuzzySearch.score	search	candidate, positions

The rest document a parameter that is simply gone: console in render_border_label, StylesCache.render and render_line; start in Clock.__init__; num_values_supplied in scalar_help_text; path in Stylesheet.add_source; background in TextOpacity.process_segments; container_width in Visual.get_minimal_width; and compose_parent in _initialize_data_bind, which takes no arguments at all.

Three needed a description rather than a rename, since the old text described the wrong thing:

• ChopsUpdate.__init__ — spans is the (y, x1, x2) list iterated in __rich_console__, not a crop region.
• SpacingProperty.__set__ — the old entry described a Style; the argument is SpacingDimensions.
• FuzzySearch.score — split into the two arguments it actually takes.

Every one was opened and read against its signature. black --check passes on all touched files.