add nbsp to table in manual

Otherwise, it looks too cramped in the HTML output.

1 files changed, 2 insertions, 2 deletions

diff --git a/rf.1 b/rf.1
index d6d16ca..a3461fc 100644
--- a/rf.1
+++ b/rf.1
@@ -42,8 +42,8 @@ The performance of
 .Nm
 primarily depends on the number of entries in the reference list at the end of the document.
 On my HP Compaq dc5700 from 2007, the relationship between number of entries in the reference list and total execution time is roughly the following:
-.Bl -column "Entries " "Time " -offset indent
-.It Em Entries Ta Em Time
+.Bl -column "EntriesXXXX" "TimeX" -offset indent
+.It Em "Entries\ \ \ \ " Ta Em Time
 .It    3          Ta    0.03s
 .It    50         Ta    0.09s
 .It    107        Ta    0.15s