feat: allow image links to use custom icons based on destination

Author: MeanderingProgrammer

doc/render-markdown.txt

@@ -1,4 +1,4 @@
-*render-markdown.txt*        For NVIM v0.11.2        Last change: 2025 June 10
+*render-markdown.txt*        For NVIM v0.11.2        Last change: 2025 June 11
 
 ==============================================================================
 Table of Contents                          *render-markdown-table-of-contents*

lua/render-markdown/health.lua

@@ -5,7 +5,7 @@ local state = require('render-markdown.state')
 local M = {}
 
 ---@private
-M.version = '8.5.0'
+M.version = '8.5.1'
 
 function M.check()
     M.start('version')

lua/render-markdown/render/inline/link.lua

@@ -27,6 +27,10 @@ function Render:setup()
         autolink = true
     elseif self.node.type == 'image' then
         icon[1] = config.image
+        local destination = self.node:child('link_destination')
+        if destination then
+            self.context.config:set_link_text(destination.text, icon)
+        end
     elseif self.node.type == 'inline_link' then
         local destination = self.node:child('link_destination')
         if destination then