Not able to get the scroll documentation working

[bhaswata08]

I'm using the default config provided by kickstart.nvim with minor modifications.
I am not able to get scroll documentation working on pressing <C-f> and <C-b>.
However it is working with mouse scroll wheel up and down.
Can anyone help?

help_nvim.mp4

Config

return { -- Autocompletion
	"saghen/blink.cmp",
	event = "VimEnter",
	dependencies = {
		-- Snippet Engine
		{
			"L3MON4D3/LuaSnip",
			version = "2.*",
			build = (function()
				if vim.fn.has("win32") == 1 or vim.fn.executable("make") == 0 then
					return
				end
				return "make install_jsregexp"
			end)(),
			dependencies = {
				{
					"rafamadriz/friendly-snippets",
					config = function()
						require("luasnip.loaders.from_vscode").lazy_load()
					end,
				},
			},
			opts = {},
		},
		"folke/lazydev.nvim",
	},
	--- @module 'blink.cmp'
	--- @type blink.cmp.Config
	opts = {
		keymap = {
			preset = "default",
		},

		appearance = {
			nerd_font_variant = "mono",
		},
		completion = {
			menu = {
				draw = {
					components = {
						kind_icon = {
							text = function(ctx)
								local kind_icon, _, _ = require("mini.icons").get("lsp", ctx.kind)
								return kind_icon
							end,
							-- (optional) use highlights from mini.icons
							highlight = function(ctx)
								local _, hl, _ = require("mini.icons").get("lsp", ctx.kind)
								return hl
							end,
						},
						kind = {
							-- (optional) use highlights from mini.icons
							highlight = function(ctx)
								local _, hl, _ = require("mini.icons").get("lsp", ctx.kind)
								return hl
							end,
						},
					},
				},
				border = "single",
				auto_show = true,
			},
			documentation = {
				auto_show = true,
				auto_show_delay_ms = 0,
				window = {
					border = "rounded",
				},
			},
		},

		sources = {
			default = { "lsp", "path", "snippets", "lazydev" },
			providers = {
				lazydev = { module = "lazydev.integrations.blink", score_offset = 100 },
			},
		},

		snippets = { preset = "luasnip" },
		fuzzy = { implementation = "lua" },
		signature = { enabled = true },
	},
}