chore: Update README for admonitions (#3387)

* chore: Update README for admonitions

* chore: Fix wording and heading

README.md

@@ -465,14 +465,20 @@ Result
 
 ![Result](/static/assets/docs/images/hide_copy_button.webp)
 
-### Admonitions - Warning / Info / Tip / Danger
+### Admonitions - Warning / Info / Tip / Danger / Tech Preview / Further Guidance
 
 :::warning
 
 Some **content** with _Markdown_ `syntax`.
 
 :::
 
+:::info
+
+Some **content** with _Markdown_ `syntax`.
+
+:::
+
 :::tip
 
 Some **content** with _Markdown_ `syntax`.
@@ -485,10 +491,25 @@ Some **content** with _Markdown_ `syntax`.
 
 :::
 
+:::preview
+
+Some **content** with _Markdown_ `syntax`.
+
+:::
+
+:::further
+
+Some **content** with _Markdown_ `syntax`.
+
+:::
+
 https://docusaurus.io/docs/markdown-features/admonitions
 
 The content must have a new line at the beginning and at the end of the tag.
 
+For guidance on using admonitions, refer to
+[Spectro Cloud Internal Style Guide: Admonitions/Callouts](https://spectrocloud.atlassian.net/wiki/spaces/DE/pages/1765933057/Spectro+Cloud+Internal+Style+Guide#Admonitions%2FCallouts).
+
 ### Video
 
 To add a video, use the following syntax. Ensure you capitalize the letter "V":