Release 22.0.0

Promote [Unreleased] changes to version 22.0.0:
- FCS 43.10.100 update
- Add FsDocsAllowExecutableProject setting
- Add fsdocs-logo-alt substitution
- Bug fixes: HTML encoding, uppercase ConditionalDefines, improved error messages

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: 2 people

RELEASE_NOTES.md

@@ -2,6 +2,8 @@
 
 ## [Unreleased]
 
+## 22.0.0 - 2026-02-25
+
 ### Added
 * Add `<FsDocsAllowExecutableProject>true</FsDocsAllowExecutableProject>` project file setting to include executable projects (OutputType=Exe/WinExe) in API documentation generation. [#918](https://github.com/fsprojects/FSharp.Formatting/issues/918)
 * Add `{{fsdocs-logo-alt}}` substitution (configurable via `<FsDocsLogoAlt>` MSBuild property, defaults to `Logo`) for accessible alt text on the header logo image. [#626](https://github.com/fsprojects/FSharp.Formatting/issues/626)