bug#33372: 26.1; check-coding-systems-region docstring is unclear

[Allen Li <darkfeline@felesatra.moe>]

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The docstring for check-coding-systems-region docstring is unclear and
has a typo.

Attached is a patch fixing it.  The patch is against master, but I
imagine it can be applied to 26.

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From dfcff03d2b2ea13c0c644d636c1ba93c590c56d3 Mon Sep 17 00:00:00 2001
From: Allen Li <darkfeline@felesatra.moe>
Date: Tue, 13 Nov 2018 23:08:26 -0800
Subject: [PATCH] Clarify check-coding-systems-region-docstring

* src/coding.c (Fcheck_coding_systems_region): Clarify docstirng.
---
 src/coding.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/coding.c b/src/coding.c
index 966492a322..4bffbf9968 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -9231,8 +9231,8 @@ DEFUN ("check-coding-systems-region", Fcheck_coding_systems_region,
 START and END are buffer positions specifying the region.
 CODING-SYSTEM-LIST is a list of coding systems to check.
 
-The value is an alist ((CODING-SYSTEM POS0 POS1 ...) ...), where
-CODING-SYSTEM is a member of CODING-SYSTEM-LIST and can't encode the
+The return value is an alist ((CODING-SYSTEM POS0 POS1 ...) ...), where
+CODING-SYSTEM is a member of CODING-SYSTEM-LIST that can't encode the
 whole region, POS0, POS1, ... are buffer positions where non-encodable
 characters are found.
 
-- 
2.19.1