fix: only show info-nodes when in Info-mode

[elken]

There's no reason to show anything when the mode isn't on.

[elken]

Why was this closed?

[seagle0128]

The info-nodes segment is only available in Info mode-line.

See

doom-modeline/doom-modeline.el

Lines 171 to 196 in 4aa8481

	(defvar doom-modeline-mode-map (make-sparse-keymap))
	(defvar doom-modeline-mode-alist
	'((message-mode . message)
	(git-commit-mode . message)
	(magit-mode . vcs)
	(dashboard-mode . dashboard)
	(Info-mode . info)
	(image-mode . media)
	(pdf-view-mode . pdf)
	(org-src-mode . org-src)
	(paradox-menu-mode . package)
	(xwidget-webkit-mode . minimal)
	(git-timemachine-mode . timemachine)
	(calc-mode . calculator)
	(calc-trail-mode . calculator)
	(circe-mode . special)
	(erc-mode . special)
	(rcirc-mode . special))
	"Alist of major modes and mode-lines.")
	(defun doom-modeline-auto-set-modeline ()
	"Set mode-line base on major-mode."
	(catch 'found
	(dolist (x doom-modeline-mode-alist)