Add a Vale rule to check for admonitions of type :::note (#2143) (#…

…2146)

* chore: Start creating a custom vale rule

* chore: Add a custom Vale rule to check admonitions

(cherry picked from commit 73c52e2)

Co-authored-by: Yuliia Horbenko <31223054+yuliiiah@users.noreply.github.com>

vale/styles/spectrocloud/admonitions.yml

@@ -0,0 +1,8 @@
+extends: substitution
+message: "The ':::note' admonition is not approved under the Spectro Cloud style guide. Consider using ':::info' or another approved admonition."
+link: https://spectrocloud.atlassian.net/wiki/spaces/DE/pages/1765933057/Spectro+Cloud+Internal+Style+Guide#Admonitions/Callouts
+level: error
+nonword: true
+ignorecase: true
+swap:
+  ":::note": ":::info"