Sanitizer Rules -- additional documentation

Signed-off-by: Alexander Scheel <[email protected]>

custom/conf/app.ini.sample

@@ -965,8 +965,8 @@ SHOW_FOOTER_TEMPLATE_LOAD_TIME = true
 
 [markup.sanitizer.1]
 ; The following keys can appear once to define a sanitation policy rule.
-; This section can appear with an incremenented number to define multiple rules.
-; e.g., [markup.sanitizer.1] -> [markup.sanitizer.2]
+; This section can appear again with a unique alphanmuric string to define multiple rules.
+; e.g., [markup.sanitizer.1] -> [markup.sanitizer.2] -> [markup.sanitizer.TeX]
 ;ELEMENT = span
 ;ALLOW_ATTR = class
 ;REGEXP = ^(info|warning|error)$

docs/content/doc/advanced/config-cheat-sheet.en-us.md

@@ -658,8 +658,8 @@ REGEXP = ^\s*((math(\s+|$)|inline(\s+|$)|display(\s+|$)))+
  - `ALLOW_ATTR`: The attribute this policy allows. Must be non-empty.
  - `REGEXP`: A regex to match the contents of the attribute against. Must be present but may be empty for unconditional whitelisting of this attribute.
 
-**Note**: The above section naming policy is new; previously the section was `[markup.sanitizer]` and keys could be redefined.
-Now, a unique identifier must appear in the section name (e.g., `[markup.sanitizer.TeX]`) in order to parse multiple rules.
+**Note**: The above section naming policy is new to v1.12.0; previously the section was `[markup.sanitizer]` and keys could be redefined in v1.11.0.
+Now, a unique identifier must appear in the section name (e.g., `[markup.sanitizer.TeX]`) in order to parse multiple rules and keys cannot be duplicated.
 This was changed because the implementation with the ini parser used was flawed; the following configs were indistinguishable after parsing:
 
 ```ini

docs/content/doc/advanced/external-renderers.en-us.md

@@ -94,3 +94,4 @@ These can be numbers, identifying names, or anything else.
 Once your configuration changes have been made, restart Gitea to have changes take effect.
 
 **Note**: The above section numbering policy is new; previously the section was `[markup.sanitizer]` and keys could be redefined.
+For more information, see the corresponding information in the cheat sheet.