doc: ssoma_repository: clarify we use the first Message-ID
tree2a906da38304cbf35ff26d6349dfbc2cbb923242
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drwxr-xr-x - Documentation
-rw-r--r-- 1601 INSTALL
-rw-r--r-- 516 MANIFEST
-rw-r--r-- 1168 Makefile.PL
-rw-r--r-- 4057 README
drwxr-xr-x - lib
drwxr-xr-x - script
drwxr-xr-x - t