update whitespace to hyphen

[jldohmann]

It might make sense to update the branch_config.name to remove the whitespace in "Branch Build"

Currently, trying to use the attribute {product-version} within a link macro generates a broken output because of the whitespace in "Branch Build": after substitution asciibinder only sees link:https://example.com/Branch, cutting off the at the whitespace, which is not a valid link since it is missing the [] at the end

additional information: original Slack thread