docs: add link to pg_start_backup() from pg_basebackup --checkpoint

This references the meaning of the fast/spread checkpoint option.

Per private IM report

diff --git a/doc/src/sgml/ref/pg_basebackup.sgml b/doc/src/sgml/ref/pg_basebackup.sgml
index 6ce0c8c387f076d1edfcbeac28a04062c32789c1..06855798fab2d3547f1a409ebc027137abeffe20 100644 (file)
--- a/doc/src/sgml/ref/pg_basebackup.sgml
+++ b/doc/src/sgml/ref/pg_basebackup.sgml
@@ -361,7 +361,7 @@ PostgreSQL documentation
       --checkpoint=fast|spread
       
        
-        Sets checkpoint mode to fast or spread (default).
+        Sets checkpoint mode to fast or spread (default) (see ).