Markdown linter (#5494)

* linter

* Add markdown linter

* add env

* only check markdown

* Add token

* Update .github/workflows/test-suite.yml

* Markdown linter

* Exit code

* Update script

* rename

* mdlint

* Add an empty line after end of file

* Testing disable

* add text

* update mdlint.sh

* ori validator inclusion

* Add config yml file

* Remove MD041 and fix advanced-datadir file

* FIx validator inclusion file conflict

* Merge branch 'unstable' into markdown-linter

* change files

* Merge branch 'markdown-linter' of https://github.com/chong-he/lighthouse into markdown-linter

* mdlint

* Remove MD025

* Remove MD036

* Remove MD045

* Removr MD001

* Set MD028 to false

* Remove MD024

* Remove MD055

* Remove MD029

* Remove MD040

* Set MD040 to false

* Set MD033 to false

* Set MD013 to false

* Rearrange yml file

* Update mdlint.sh and test

* Test remove fix

* Test with fix

* Test with space

* Fix summary indentation

* Test mdlint.sh

* Update mdlint.sh

* Test

* Update

* Test fix

* Test again

* Fix

* merge into check-code

* Update scripts/mdlint.sh

Co-authored-by: Mac L <mjladson@pm.me>

* Update scripts/mdlint.sh

Co-authored-by: Mac L <mjladson@pm.me>

* Remove set -e

* Add comment

* Merge pull request #7 from chong-he/unstable

Merge unstable to markdown branch

* mdlint

* Merge branch 'unstable' into markdown-linter

* mdlint

book/src/validator-manager.md

@@ -1,7 +1,6 @@
 # Validator Manager
 
 [Ethereum Staking Launchpad]: https://launchpad.ethereum.org/en/
-[Import Validators]: #import-validators
 
 ## Introduction
 
@@ -32,4 +31,4 @@ The `validator-manager` boasts the following features:
 ## Guides
 
 - [Creating and importing validators using the `create` and `import` commands.](./validator-manager-create.md)
-- [Moving validators between two VCs using the `move` command.](./validator-manager-move.md)
+- [Moving validators between two VCs using the `move` command.](./validator-manager-move.md)