links/scalable/mimetypes/text-x-c++src.svg seems wrong

[tomgrean]

Describe the bug links/scalable/mimetypes/text-x-c++src.svg pointed to text-x-csrc.svg, but I think it should point to text-x-cpp.svg

To Reproduce Steps to reproduce the behavior: $ ls -l text-x-c++src.svg text-x-c++src.svg -> text-x-csrc.svg

Expected behavior text-x-c++src.svg -> text-x-cpp.svg

Screenshots

Desktop (please complete the following information):

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