[Nmh-workers] Change to next.man

- Delete trailing whitespace

diff --git a/man/next.man b/man/next.man
index 3f298521..983a9486 100644
--- a/man/next.man
+++ b/man/next.man
@@ -7,7 +7,7 @@ next \- show the next nmh message
 .SH SYNOPSIS
 .HP 5
 .na
-.B next 
+.B next
 .RB [ \-help ]
 .RB [ \-version ]
 .RI [ +folder ]

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