docs: Add basic doc for wrapStandAloneImageWithinParagraph etc.

See #10492

docs/content/en/templates/render-hooks.md

@@ -84,7 +84,16 @@ PlainText
 : The plain variant of the above.
 
 Attributes (map)
-: A map of attributes (e.g. `id`, `class`)
+: A map of attributes (e.g. `id`, `class`). Note that this will currently always be empty for links.
+
+The `render-image` templates will also receive:
+
+IsBlock {{< new-in "0.108.0" >}}
+: Returns true if this is a standalone image and the config option [markup.goldmark.parser.wrapStandAloneImageWithinParagraph](/getting-started/configuration-markup/#goldmark) is disabled.
+
+Ordinal  {{< new-in "0.108.0" >}}
+: Zero-based ordinal for all the images in the current document.
+
 
 ### Link with title Markdown example
 

docs/data/docs.json

@@ -1572,7 +1572,8 @@
           "attribute": {
             "title": true,
             "block": false
-          }
+          },
+          "wrapStandAloneImageWithinParagraph": true
         },
         "extensions": {
           "typographer": true,
@@ -1722,7 +1723,8 @@
       },
       "funcs": {
         "getenv": [
-          "^HUGO_"
+          "^HUGO_",
+          "^CI$"
         ]
       },
       "http": {
@@ -3632,7 +3634,7 @@
           "Aliases": null,
           "Examples": [
             [
-              "{{- $m := newScratch -}}\n{{- $m.Set \"Hugo\" \"Rocks!\" -}}\n{{- $m.Values | debug.Dump | safeHTML -}}",
+              "{{ $m := newScratch }}\n{{ $m.Set \"Hugo\" \"Rocks!\" }}\n{{ $m.Values | debug.Dump | safeHTML }}",
               "map[string]interface {}{\n  \"Hugo\": \"Rocks!\",\n}"
             ]
           ]