docs: fix broken links in troubleshooting guide

[DariuszPorowski]

📥 Pull Request

❓ What are you trying to address

This pull request includes updates to the documentation to correct file references for the fabric_workspace resource. The changes ensure that the links point to the correct .md file.

✨ Description of new changes

Documentation updates:

• docs/guides/troubleshooting.md: Updated the reference to fabric_workspace resource to point to workspace.md instead of workspace. [1] [2]
• templates/guides/troubleshooting.md.tmpl: Updated the reference to fabric_workspace resource to point to workspace.md instead of workspace. [1] [2]