I got to this feedback document using the feedback link from the likely intended target page, as I did not see a place on that page to file such feedback.
The "Learn More about MMA" link as seen here:

Does not redirect properly to the _Log Analytics virtual machine extension for Windows_ page, as I am guessing it is likely supposed to do.
The link on the portal page is this: http://technet.microsoft.com/library/dn249912.aspx
Which redirects to a page not found error: https://docs.microsoft.com/en-us/powershell/dsc/overview?redirectedfrom=MSDN
I am guessing it should redirect to here, though I do not know if we have any means of looking up the technet library redirect links:
https://docs.microsoft.com/en-us/azure/virtual-machines/extensions/oms-windows
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Thanks for the feedback! We are currently investigating and will update you shortly.
Thanks for bringing this to our attention. I have shared this feedback with the portal team internally and will share an update when this is fixed.
A PR has been created and changes will be live shortly.
Thanks for bringing this to our attention. We will now close this issue. If there are further questions regarding this matter, please tag me in a comment. I will reopen it and we will gladly continue the discussion.