Removed html tags from markdown

Signed-off-by: Russell Seymour <[email protected]>

Author: russellseymour

overview.md

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-<div style="background-color: #99ccff; color: black; padding:4px">
-<strong>DEPRECATED</strong>
-<p>
-This extension is now deprecated in favour of the new Chef Extension for Azure DevOps which can be found <a href="https://marketplace.visualstudio.com/items?itemName=chef-software.chef-azdo">here</a>. The new extension allows the execution of any Chef component.
-</p>
-<p>
-This version of the Chef Extension will not be developed or maintained. We encourage everyone to upgrade to the new extension. Documentation and migration information can be found <a href="https://chef-partners.github.io/azuredevops-chef-extension">here</a>.
-</p>
-</div>
-
-<p />
+# ---- DEPRECATED ----
+This extension is now deprecated in favour of the new Chef Extension for Azure DevOps which can be found [here](https://marketplace.visualstudio.com/items?itemName=chef-software.chef-azdo). The new extension allows the execution of any Chef component.
+
+This version of the Chef Extension will not be developed or maintained. We encourage everyone to upgrade to the new extension. Documentation and migration information can be found [here](https://chef-partners.github.io/azuredevops-chef-extension).
 
 
 # Chef Integration for Azure Pipelines