doc(layout_strategies): document shared options for bottom_pane

lua/telescope/pickers/layout_strategies.lua

@@ -847,9 +847,15 @@ end)
 --- Bottom pane can be used to create layouts similar to "ivy".
 ---
 --- For an easy ivy configuration, see |themes.get_ivy()|
+---@eval { ["description"] = require("telescope.pickers.layout_strategies")._format("bottom_pane") }
 layout_strategies.bottom_pane = make_documented_layout(
   "bottom_pane",
-  vim.tbl_extend("error", shared_options, {
+  vim.tbl_extend("error", {
+    height = shared_options.height,
+    mirror = shared_options.mirror,
+    scroll_speed = shared_options.scroll_speed,
+    prompt_position = shared_options.prompt_position,
+  }, {
     preview_width = { "Change the width of Telescope's preview window", "See |resolver.resolve_width()|" },
     preview_cutoff = "When columns are less than this value, the preview will be disabled",
   }),