[Support] Update steps to view open tickets and add section on adding participants to tickets (#16812)

* Update contacting-cloudflare-support.mdx

Updating docs for open support tickets and adding participants to open tickets.

* Update contacting-cloudflare-support.mdx

---------

Co-authored-by: Nic <[email protected]>

Author: dom-cf

src/content/docs/support/contacting-cloudflare-support.mdx

@@ -79,9 +79,9 @@ To submit a support case, follow these steps:
 1. Browse to [https://dash.cloudflare.com/?to=/:account/support](https://dash.cloudflare.com/?to=/:account/support).
 2. Enter the **email** and **password** for your Cloudflare account. Your email needs to be [verified](/fundamentals/setup/account/account-security/login-and-account-issues/) in order to submit a Support case.
 3. Select the appropriate account requiring assistance.
-4. Verify that you are now in the Support Portal
-5. Choose the category and subcategories that best define your issue
-6. Choose the affected domains (if applicable)
+4. Verify that you are now in the Support Portal.
+5. Choose the category and subcategories that best define your issue.
+6. Choose the affected domains (if applicable).
 7. Enter a detailed summary of the issue you’re experiencing.
 8. Review the right-hand panel of the Portal for recommended resources and for troubleshooting guides resulting from diagnostics run against your domain.
 9. If the provided resources did not solve your issue, click Add more details to submit a case\*\*
@@ -100,7 +100,7 @@ To submit a support case, follow these steps:
     * Relevant logs from the origin web server
     * Output from [test tools](/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/) such as MTR, traceroute, dig/nslookup, and cURL
       \-   Priority level, impact to service / production
-      - Any collaborators whom you wish to be cc'd on the case
+      \- Any collaborators whom you wish to be cc'd on the case
 11. Click **Submit Case**
 
 \*\* Available to certain plan types only. Refer to chart above for details.
@@ -130,9 +130,17 @@ If you need to share a larger file, please provide a link to the file using Goog
 ### View open support cases
 
 1. Log in to your Cloudflare account.
-2. Select *Help Center* from **Support** dropdown.
-3. Click **Sign In** if it appears in the top-right corner; otherwise, click on your name or profile picture.
-4. Click **My Activities & Requests**.
+2. Select `My Activities - All Tickets` from **Support** dropdown.
+3. Select your account if needed.
+4. You will be redirected to the portal where you can see your own cases and cases you are CC'd on.
+
+### Add participants to open support tickets
+
+1. Log in to your Cloudflare account.
+2. Select `My Activities - All Tickets` from **Support** dropdown.
+3. Select your account if needed.
+4. Select the case you want to add participants to.
+5. Enter their email in the `Case Participants` box in the top right and click **Add**.
 
 ***