fix(nvim): correct side panel height calculation

Author: ruicsh

lua/lib/ui.lua

@@ -7,7 +7,7 @@ M.side_panel_win_config = function()
 		anchor = "NE",
 		border = { "", "", "", "", "", "", "", "│" },
 		col = vim.o.columns,
-		height = vim.o.lines - vim.o.cmdheight - 1,
+		height = vim.o.lines - vim.o.cmdheight,
 		relative = "editor",
 		row = 0,
 		style = "minimal",