Update markdown-link-check version in template installation docs

This is now the version used as standard in all Arduino Tooling projects, which the "template" is intended to be used
with.

Author: per1234

workflow-templates/check-markdown-task.md

@@ -37,7 +37,7 @@ The tool dependencies of this workflow are managed by [npm](https://www.npmjs.co
 Add the dependencies by running this command:
 
 ```text
-npm install --save-dev markdown-link-check@^3.11.2 markdownlint-cli@^0.37.0
+npm install --save-dev markdown-link-check@^3.13.7 markdownlint-cli@^0.37.0
 ```
 
 Commit the resulting changes to the `package.json` and `package-lock.json` files.