Update instructions on how to get the API Key from the IATI Registry

[andreaszenasidi]

More and more publishers are contacting the IATI Helpdesk because they can't find their IATI Registry API Key.

Would be useful if the instruction text in AidStream (screengrab below - yellow box) could be updated to the following:
You need to provide the IATI Registry API Key to enable AidStream to access your Registry on your behalf. To find the API Key log in to the IATI Registry with the Admin user account for your organisation. Go to My Account and the API Key should be at the bottom of the page. If your API Key is empty, scroll to the top of the page and click Manage and find the Regenerate API Key button at the bottom of the page. Using this button you can generate your new API Key.