docs(notify): adjust documentation about preserving vim.notify

Related to #1999.

Author: echasnovski

doc/mini-notify.txt

@@ -12,7 +12,7 @@ Features:
 - Manage notifications (add, update, remove, clear).
 
 - Custom |vim.notify()| implementation. To adjust, use |MiniNotify.make_notify()|
-  after calling |MiniNotify.setup()|.
+  or save-restore `vim.notify` manually after calling |MiniNotify.setup()|.
 
 - Automated show of LSP progress report.
 
@@ -259,7 +259,7 @@ call manually after `setup()`. For example, to show errors longer: >lua
   require('mini.notify').setup()
   vim.notify = MiniNotify.make_notify({ ERROR = { duration = 10000 } })
 <
-To preserve default `vim.notify`: >lua
+To preserve original `vim.notify`: >lua
 
   local notify_orig = vim.notify
   require('mini.notify').setup()

lua/mini/notify.lua

@@ -12,7 +12,7 @@
 --- - Manage notifications (add, update, remove, clear).
 ---
 --- - Custom |vim.notify()| implementation. To adjust, use |MiniNotify.make_notify()|
----   after calling |MiniNotify.setup()|.
+---   or save-restore `vim.notify` manually after calling |MiniNotify.setup()|.
 ---
 --- - Automated show of LSP progress report.
 ---
@@ -278,7 +278,7 @@ MiniNotify.config = {
 ---   require('mini.notify').setup()
 ---   vim.notify = MiniNotify.make_notify({ ERROR = { duration = 10000 } })
 --- <
---- To preserve default `vim.notify`: >lua
+--- To preserve original `vim.notify`: >lua
 ---
 ---   local notify_orig = vim.notify
 ---   require('mini.notify').setup()