ox-ascii.el: Consistently add brackets around links

* lisp/ox-ascii.el (org-ascii-link): Add square brackets around
description of fuzzy links when they are exported inline.
* lisp/ol-docview.el (org-docview-export):
* lisp/ox-ascii.el (org-ascii-link): Export links with square brackets
around description and angle brackets around path.

This make export of links inline (when `org-ascii-links-to-notes' is
nil) consistent with "http:" links: "[DESC] (<URI>)".

I would drop brackets for "http:" and similar links instead
("DESC (<URI>)" or even "DESC <URI>"), but any case I prefer
consistency.

Ihor Radchenko to emacs-orgmode. Re: [RFC][PATCH] Allow to export to
ascii custom link types as notes. Tue, 24 Oct 2023 10:40:41 +0000.
<https://list.orgmode.org/87edhk717a.fsf@localhost>

lisp/ol-docview.el

@@ -67,7 +67,7 @@
       (cond
        ((eq backend 'html) (format "<a href=\"%s\">%s</a>" path desc))
        ((eq backend 'latex) (format "\\href{%s}{%s}" path desc))
-       ((eq backend 'ascii) (format "%s (%s)" desc path))
+       ((eq backend 'ascii) (format "[%s] (<%s>)" desc path))
        (t path)))))
 
 (defun org-docview-open (link _)

lisp/ol-man.el

@@ -91,7 +91,7 @@ BACKEND is the current export backend."
      ((eq backend 'html) (format "<a target=\"_blank\" href=\"%s\">%s</a>" path desc))
      ((eq backend 'latex) (format "\\href{%s}{%s}" path desc))
      ((eq backend 'texinfo) (format "@uref{%s,%s}" path desc))
-     ((eq backend 'ascii) (format "%s (%s)" desc path))
+     ((eq backend 'ascii) (format "[%s] (<%s>)" desc path))
      ((eq backend 'md) (format "[%s](%s)" desc path))
      (t path))))
 

lisp/ox-ascii.el

@@ -1607,9 +1607,9 @@ INFO is a plist holding contextual information."
 	  ((guard desc)
 	   (if (plist-get info :ascii-links-to-notes)
 	       (format "[%s]" desc)
-	     (concat desc
-		     (format " (%s)"
-			     (org-ascii--describe-datum destination info)))))
+	     (format "[%s] (%s)"
+                     desc
+		     (org-ascii--describe-datum destination info))))
 	  ;; External file.
 	  (`plain-text destination)
 	  (`headline