fix(docs): update guide links (#15265)

- Update user guide links for email integration, notes, tasks, and
API/webhooks sections to reflect new route structure

Currently, navigating using Algolia's search can result in 404s due to
broken links:
<img width="1105" height="601" alt="Screenshot 2025-10-22 at 10 36
55 AM"
src="https://github.com/user-attachments/assets/54ba762c-f616-4029-a100-0eca3f8cbd9e"
/>

Co-authored-by: StephanieJoly4 <stephanie@twenty.com>

Author: marcmaceira

packages/twenty-website/src/content/user-guide/getting-started/what-is-twenty.mdx

@@ -22,17 +22,17 @@ Twenty is the leading open-source CRM, crafted by hundreds of contributors to su
 
 **Pipeline Visualization:** Get a clear view of your processes with customizable views. [Explore views](/user-guide/section/crm-essentials/view-management).
 
-**Workflows:** Automate your business processes and integrate with external tools using powerful workflow automation. [Get started](/user-guide/section/workflows/getting-started-workflows).
-
-**Email Integration:** View the emails of a specific customer or company within your workspace. [Integrate now](/user-guide/section/collaboration/emails-and-calendars).
+**Email Integration:** View the emails of a specific customer or company within your workspace. [Integrate now](/user-guide/section/integrations/emails).
 
 **Notes:** Create detailed notes for each record to share knowledge more effectively. [Add notes](/user-guide/section/collaboration/notes).
 
 **Tasks:** Schedule tasks to track customer interactions. [See how](/user-guide/section/collaboration/tasks).
 
-**Permissions:** Control access and manage user roles with flexible workspace and object-level permissions. [Configure permissions](/user-guide/section/settings/permissions).
+**API & Webhooks:** Connect to other apps and automate workflows with API and Webhooks. [Start integrating](/user-guide/section/integrations/api-webhooks).
 
-**API & Webhooks:** Connect to other apps and automate workflows with API and Webhooks. [Start integrating](/user-guide/section/integrations-api/api-webhooks).
+**Workflows:** Automate your business processes and integrate with external tools using powerful workflow automation. [Get started](/user-guide/section/workflows/getting-started-workflows).
+
+**Permissions:** Control access and manage user roles with flexible workspace and object-level permissions. [Configure permissions](/user-guide/section/settings/permissions).
 
 ### Benefits
 

packages/twenty-website/src/content/user-guide/integrations/integrations.mdx

@@ -18,7 +18,7 @@ Sync Twenty with 3000+ apps using <ArticleLink href="https://zapier.com/apps/twe
 2. Click on `+ Create Zap` in the left sidebar. 
 3. Choose the application you want to set as the trigger. A trigger refers to an event that starts the automation. 
 4. Select Twenty as the action. An action is the event performed whenever an application triggers an automation. <ArticleLink href="https://zapier.com/how-it-works">Learn more about triggers and actions in Zapier.</ArticleLink>
-5. Once you choose the Twenty account that you want to use for your automation, you'll have to allow Zapier to access it by adding an API key. You can learn [how to generate your API key here.](/user-guide/section/functions/api-webhooks)
+5. Once you choose the Twenty account that you want to use for your automation, you'll have to allow Zapier to access it by adding an API key. You can learn [how to generate your API key here.](/user-guide/section/integrations/api-webhooks)
 6. Enter your API key and click on 'Yes, Continue to Twenty.'
 
 <div style={{padding:'69.01% 0 0 0', position:'relative', margin: '32px 0px 0px'}}>