[PATCH] sindex.1: Use ' for a plain quote char

["Uwe Kleine-König" <uwe@kleine-koenig.org>]

lintian (a linter for Debian packages) warns:

N:    This manual page uses the \' groff sequence. Usually, the intent to
N:    generate an apostrophe, but that sequence actually renders as a an acute
N:    accent.
N:
N:    For an apostrophe or a single closing quote, use plain '. For single
N:    opening quote, i.e. a straight downward line ' like the one used in
N:    shell commands, use \(aq.

I'm not following its advice but stick to ' as is done in other places
of sindex.1.

Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
---
 sindex.1 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sindex.1 b/sindex.1
index e3e14ca3ad23..d7c5173a85f2 100644
--- a/sindex.1
+++ b/sindex.1
@@ -128,8 +128,8 @@ struct member
 .
 .SH MODE
 The \fBMODE\fR is dumped as a 3-letter string. The first letter denotes address
-of part, 2-nd - access by value, 3-rd - access by pointer. A special value
-\'\fIdef\fR\' means a symbol definition.
+of part, 2-nd - access by value, 3-rd - access by pointer. A special
+value '\fIdef\fR' means a symbol definition.
 .TP
 \fBr\fR
 read
-- 
2.27.0