11622 clean up rarer mandoc lint warnings

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  This is a list of
  \fBsed\fP
  functions separated by newlines, as follows:
  
  { function
- .br
    function
- .br
    ...
- .br
    function
  .br
  }
- .br
  
  The
  ``{''
  can be preceded by white space and can be followed by white space.
  The function can be preceded by white space.
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