Remove HTML `<head>` tags from DocBlock summaries in wp-admin/admin-header.php.

Also better-specify the `$hook_suffix` value in the `admin_head-$hook_suffix` hook docs per hook documentation precedent.

Props rarst for the initial patch.
See #30473


git-svn-id: https://develop.svn.wordpress.org/trunk@30535 602fd350-edb4-49c9-b593-d223f7449a82
Ensure inline code is markdown-escaped as such, and that code snippets in descriptions are properly indented.

Affects DocBlocks for the following core elements:
* Two arguments in `_walk_bookmarks()`
* A code snippet in the class header for `WP_Roles`
* A code snippet in the class header for `WP_HTTP_Proxy`
* Inline code fixes in the summary and a parameter description for `WP_oEmbed::discover()`
* An argument description in `_WP_Editors::parse_settings()`
* Inline code fixes in the summary and a parameter description the `embed_oembed_discover` hook.

Props rarst.
See #30473.


git-svn-id: https://develop.svn.wordpress.org/trunk@30536 602fd350-edb4-49c9-b593-d223f7449a82
Ensure inline code is markdown-escaped as such, and that code snippets in descriptions are properly indented.

Affects DocBlocks for the following core elements:
* Backtick-escapes a `<link>` tag in a parameter description for the `embed_oembed_discover` hook
* Inline code fixes in the summary and return description for `WP_List_Table::get_table_classes()`
* Removes HTML markup from the summary for `WP_List_Table::display_rows_or_placeholder()`
* Backtick-escapes a `<tr>` tag in a parameter description for `WP_Users_List_Table::single_row()`
* Converts non-DocBlocks into multi-line comments in `WP_Dependencies::do_items()`
* Removes HTML markup from the summary for the `comment_form_top` hook.
* Inline code and snippet fixes in the description for `wp_get_schedules()`

Props rarst for the initial patch.
See #30473.


git-svn-id: https://develop.svn.wordpress.org/trunk@30537 602fd350-edb4-49c9-b593-d223f7449a82
Ensure inline code is markdown-escaped as such, HTML tags are removed from summaries, and that code snippets in descriptions are properly indented.

Affects DocBlocks for the following core elements:
* Remove HTML tag from parameter description in `comment_form()`
* Remove HTML tag from a summary for the `comment_form_top` hook
* Markdown-indent a code snippet in the description for `get_linkobjectsbyname()`
* Markdown-indent a code snippet and format an unordered list in the description for `get_linkobjects()`
* Backtick-escape some inline code in the description for `clean_pre()`
* Remove HTML tag from the summary for the `rss_tag_pre` hook
* Various formatting fixes in the descriptions for `get_filesystem_method()` and `request_filesystem_credentials()`

Props rarst for the initial patch.
See #30473.


git-svn-id: https://develop.svn.wordpress.org/trunk@30538 602fd350-edb4-49c9-b593-d223f7449a82
Ensure the DocBlock directly precedes the hook line for the `post_edit_form_tag` action in wp-admin/edit-form-advanced.php.

This fixes the parser getting confused about which DocBlock belongs to which hook or function in this file.

See #30473.


git-svn-id: https://develop.svn.wordpress.org/trunk@30539 602fd350-edb4-49c9-b593-d223f7449a82
Ensure inline code is markdown-escaped as such, HTML tags are removed from summaries, and that code snippets in descriptions are properly indented.

Affects DocBlocks for the following core elements in wp-includes/formatting.php:
* Markdown-indent code snippets in the description for `wptexturize()`
* Backtick-escape inline code in a parameter description for `_wptexturize_pushpop_element()`
* Backtick-escape inline code in the description for `shortcode_unautop()`
* Backtick-escape HTML tags in the description for `convert_chars()`
* Markdown-indent a code snippet in the description for `_split_str_by_whitespace()`
* Backtick-escape an `<img>` tag in the description for `translate_smiley()`
* Add markdown formatting to the description for `links_add_target()`
* Backtick-escape HTML tags in the description for `wp_strip_all_tags()`

Props rarst.
See #30473.


git-svn-id: https://develop.svn.wordpress.org/trunk@30540 602fd350-edb4-49c9-b593-d223f7449a82
Ensure inline code is markdown-escaped as such, HTML tags are removed from summaries, and that code snippets in descriptions are properly indented.

Affects DocBlocks for the following core elements:
* Markdown-indent a code snippet in the description for `_deprecated_argument()`
* Markdown-indent a code snippet in the description for `wp_localize_script()`
* Backtick-escape HTML tags in two parameter descriptions for `wp_register()`
* Various DocBlock formatting in the description for `get_bloginfo()`
* Remove HTML tag from the summary for `_wp_render_title_tag()`
* Backtick-escape a HTML tag in the description for `get_archives_link()`
* Markdown-indent a code snippet in the description for `wp_admin_css_color()`
* Markdown-indent a code snippet in the description for the `welcome_panel` hook

Props rarst.
See #30473.


git-svn-id: https://develop.svn.wordpress.org/trunk@30541 602fd350-edb4-49c9-b593-d223f7449a82