doc: fix link to developer-notes.md file in multiprocess.md #28556

1. 
   david-alvarez-rosa commented at 10:14 am on October 2, 2023: none

   Fix link to developer-notes.md file in multiprocess.md.
2. doc: fix link to developer-notes.md file in multiprocess.md d9b172cd00
3. 
   DrahtBot commented at 10:14 am on October 2, 2023: contributor

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4. DrahtBot added the label Docs on Oct 2, 2023
5. fanquake approved
6. 
   fanquake commented at 10:48 am on October 2, 2023: member

   ACK d9b172cd00fc3a8de1308e4469b82f5da474ea33
7. fanquake merged this on Oct 2, 2023
8. fanquake closed this on Oct 2, 2023

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