Fix broken links pointing to pre-reorg folder locations (#473)

- SharePoint Customizer: absolute GitHub URLs → relative paths
- Workshop/Proctor: blob paths updated from CopilotStudioWorkshop/ to guides/workshop/

Co-authored-by: adilei <adileibowiz@microsoft.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 3 people

guides/workshop/PROCTOR_INSTRUCTIONS.md

@@ -16,4 +16,4 @@ Instructions cover:
 - Setting up SharePoint 
 - Setting up the ServiceNow instance.
 
-Download [Proctor files.zip](https://github.com/microsoft/CopilotStudioSamples/blob/main/CopilotStudioWorkshop/Proctor%20files.zip) and follow the instructions contained in **Microsoft Copilot Studio - Workshop setup instructions.docx** to setup the environment for the workshop.
+Download [Proctor files.zip](https://github.com/microsoft/CopilotStudioSamples/blob/main/guides/workshop/Proctor%20files.zip) and follow the instructions contained in **Microsoft Copilot Studio - Workshop setup instructions.docx** to setup the environment for the workshop.

guides/workshop/README.md

@@ -28,8 +28,8 @@ nav_order: 2
 
 ## Attendee Instructions
 
-- Access the workshop main slides here: [Microsoft Copilot Studio - Workshop.pptx](https://github.com/microsoft/CopilotStudioSamples/blob/main/CopilotStudioWorkshop/Microsoft%20Copilot%20Studio%20-%20Workshop.pptx).
-- Download [Lab files.zip](https://github.com/microsoft/CopilotStudioSamples/blob/main/CopilotStudioWorkshop/Lab%20files.zip), unzip them, and follow each lab DOCX (if you don't have Word, use PDF) instructions in the sequential order.
+- Access the workshop main slides here: [Microsoft Copilot Studio - Workshop.pptx](https://github.com/microsoft/CopilotStudioSamples/blob/main/guides/workshop/Microsoft%20Copilot%20Studio%20-%20Workshop.pptx).
+- Download [Lab files.zip](https://github.com/microsoft/CopilotStudioSamples/blob/main/guides/workshop/Lab%20files.zip), unzip them, and follow each lab DOCX (if you don't have Word, use PDF) instructions in the sequential order.
 - Ideally, set up a new work profile in your browser, specific to that workshop. Alternatively, you can choose to browse as a guest or start an InPrivate session.
 - Connect to Copilot Studio: [aka.ms/CopilotStudioStart](https://aka.ms/CopilotStudioStart) using the provided credentials.
 

ui/embed/sharepoint-customizer/README.md

@@ -10,7 +10,7 @@ This code sample demonstrates how to create a SharePoint SPFx component which is
 
 {: .important }
 > ⚠️ **This sample has been superseded.**  
-> Please use the updated sample here: [SharePoint SSO App Customizer](https://github.com/microsoft/CopilotStudioSamples/tree/main/SSOSamples/SharePointSSOAppCustomizer).  
+> Please use the updated sample here: [SharePoint SSO App Customizer](./SharePointSSOAppCustomizer/).  
 >  
 > The new sample:
 > - Uses a **modern UI**

ui/embed/sharepoint-customizer/SharePointSSOAppCustomizer/README.md

@@ -11,7 +11,7 @@ This sample demonstrates how to integrate a Microsoft Copilot Studio agent into
 
 The key advantage of using the Microsoft 365 Agents SDK is its ability to connect to agents that support Microsoft authentication, which enables [tenant graph grounding](https://learn.microsoft.com/en-us/microsoft-copilot-studio/knowledge-copilot-studio#tenant-graph-grounding) capabilities.
 
-> **Note**: This sample supersedes the [legacy SharePoint SSO Component sample](https://github.com/microsoft/CopilotStudioSamples/tree/main/SSOSamples/SharePointSSOComponent) which uses DirectLine and a modal dialog. 
+> **Note**: This sample supersedes the [legacy SharePoint SSO Component sample](../) which uses DirectLine and a modal dialog. 
 
 {: .important }
 > ⚠️ **This is an open-source reference sample only.**