Correct docker url in base.bst

Correct url path in base.bst for the x86_64 image.

Without this we get the following error when we try to track the dependencies:

[00:00:00][????????][track:base.bst  ] FAILURE 404 Client Error: NOT FOUND for url: https://registry.hub.docker.com/v2/buildstream/image-tools//manifests/latest

Notice this url contains '//'

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• d7e893ab - base.bst: Change url for docker source

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@tlater, please could you review this if you find some time

added 1 commit

• 2567a029 - base.bst: Change url for docker source

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resolved all discussions

approved this merge request

merged

mentioned in commit ab36bd40