Update contributor guide url

[dstrome]

Please use this template to ensure easier processing of your pull request

Category

• [ ] Content fix
• [ ] New article
• [x] Example checked item (delete this line)

For the above list, an empty checkbox is [ ] as in [SPACE]. A checked checkbox is [x] with no space between the brackets. Use the PREVIEW tab at the top right to preview the rendering before submitting your issue.

(DELETE THIS PARAGRAPH AFTER READING)

Related issues

• fixes #issuenumber
• partially #issuenumber
• mentioned in #issuenumber

If this fixes (should close) or references an issue, please add the issue number here. When you type the hashtag symbol (#), a list of potential issues will pop up from which you can choose. This helps those maintaining the issue list as it will (1) link the PR to the issue & (2) automatically close the issue when this PR is merged in.

(DELETE THIS PARAGRAPH AFTER READING)

Contents of the Pull Request

Please describe the changes in this PR. Try to give enough details so the person reviewing it to merge it can make a good decision about your content.

(DELETE THIS PARAGRAPH AFTER READING)

Guidance

Please update this PR information accordingly. We'll use this as part of our release notes in monthly communications.

Please target your PR to master branch. Released documents are in live branch.

(DELETE THIS PARAGRAPH AFTER READING)

[learn-build-service-prod[bot]]

Learn Build status updates of commit 28017e8:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
Community/docfx.json	:white_check_mark:Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod[bot]]

Learn Build status updates of commit 28017e8:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
Community/docfx.json	:white_check_mark:Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel