vim: Import v9.1.2110

* runtime(doc): Fix overlength lines in :help {russian,vietnamese}.txt
* CI: check encoding of runtime files with utf-8 name
* runtime(toml): update syntax and ftplugin.
* runtime(doc): clarify the help style a bit
* 9.1.2110: filetype: skhd files are not recognized
* runtime: convert *_utf-8.vim files to actual UTF-8 encoding
* runtime(doc): Fix erroneous *roff syntax examples
* runtime(doc): Tweak tag lines in vim9.txt
* runtime(rustfmt): Recover accidentally deleted code, don't hide rustfmt error
* runtime(doc): mark a-a-p website as dead
* 9.1.2109: filetype: NetLinx fires are not recognized

Author: github-actions[bot]

gitlog.txt

@@ -1 +1 @@
-* [9.1.2108](https://github.com/vim/vim/commit/4fcbc70fb1d7a6973edcd24f998990934b05893f): tests: Test\_foldtextresult\_rightleft() does not restore 'columns'\n* [9.1.2107](https://github.com/vim/vim/commit/85241020e808a74221a4befa367ceeda76af7ee0): :normal may change cmdline history\n* [9.1.2106](https://github.com/vim/vim/commit/7d22f84f0b8107fb2eb7edb5665f08daa5dae12a): Vim9: class, enum and type alias can be used as value\n* [9.1.2105](https://github.com/vim/vim/commit/2b6bdbc69780817bf3ef2e00b8ff0c0b8decba9e): tests: not enough tests for using plain\_vgetc()\n* [runtime(doc): Fix typo in syntax.txt](https://github.com/vim/vim/commit/3a324c83abb78a0fc80433db09737ab0e660a0a6)\n* [runtime(csh): Update ftplugin, improve matchit behaviour](https://github.com/vim/vim/commit/09a48056c775074e0c29aaaf252ccea918f42bbc)\n* [9.1.2104](https://github.com/vim/vim/commit/e89d97aaea0e2e94e07e24271976d0a8d2e23c38): readdirex() might be slow\n* [runtime(csh,tcsh): Update syntax files](https://github.com/vim/vim/commit/95bb4ef7d1b07591ae1a7d3616432bbbe6858dd1)\n* [translation(ua): Update Ukrainian translation](https://github.com/vim/vim/commit/d532b01c36577a2b4123b7ebec6384fe6413bba7)
+* [runtime(doc): Fix overlength lines in :help {russian,vietnamese}.txt](https://github.com/vim/vim/commit/17bba758fa626ab5b07faefbada0938a4ceeca4d)\n* [CI: check encoding of runtime files with utf-8 name](https://github.com/vim/vim/commit/c035f518c333ff6d3915948398ade3086a573c3d)\n* [runtime(toml): update syntax and ftplugin.](https://github.com/vim/vim/commit/dd3aa92ce610c2f61e5b8899d68dbe7f840cc377)\n* [runtime(doc): clarify the help style a bit](https://github.com/vim/vim/commit/5268b95150d99b560178ed361079c16c3d4c59f6)\n* [9.1.2110](https://github.com/vim/vim/commit/e5f61842b509acea91c63923e60987ad7ae123dd): filetype: skhd files are not recognized\n* [runtime: convert \*\_utf-8.vim files to actual UTF-8 encoding](https://github.com/vim/vim/commit/5c855ce43d5d045b81301472cdac397efafa7723)\n* [runtime(doc): Fix erroneous \*roff syntax examples](https://github.com/vim/vim/commit/e914ada32334af67604c9791aa4149a74ab0d1eb)\n* [runtime(doc): Tweak tag lines in vim9.txt](https://github.com/vim/vim/commit/a5ba252f08d74f966a13a2740c0c9360f074846e)\n* [runtime(rustfmt): Recover accidentally deleted code, don't hide rustfmt error](https://github.com/vim/vim/commit/ad0dd7cd1ef405086e8266f8f62221a307a72fe9)\n* [runtime(doc): mark a-a-p website as dead](https://github.com/vim/vim/commit/2def2a70a37dd1b206775fdabd4f96eccb6c8022)\n* [9.1.2109](https://github.com/vim/vim/commit/6963e3b8bf46893f8d09e7ea556c37581248e777): filetype: NetLinx fires are not recognized