doc: explain limit on concurrency per repo — radicle-ci-broker

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Radicle CI broker

doc: explain limit on concurrency per repo

Merged liw opened 5 months ago

liw opened with revision 26dee8f7 on base 7d740a9f +6 -0 5 months ago

liw merged revision 26dee8f7 at ac530cf2 5 months ago