https://git.ruby-lang.org/ruby.git/commit/?id=9b3115ff64

From 9b3115ff643e2c3d30f12f7f7a80a07c686e23d2 Mon Sep 17 00:00:00 2001
From: Peter Zhu <peter@p...>
Date: Sun, 6 Feb 2022 10:41:26 -0500
Subject: [DOC] Remove extra period

---
 io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/io.c b/io.c
index e1f58b01d3..568fcf659c 100644
--- a/io.c
+++ b/io.c
@@ -9720,7 +9720,7 @@ static VALUE argf_readlines(int, VALUE *, VALUE); https://github.com/ruby/ruby/blob/trunk/io.c#L9720
  *  With only string argument +sep+ given,
  *  returns the remaining lines as determined by line separator +sep+,
  *  or +nil+ if none;
- *  see {Line Separator}[rdoc-ref:IO@Line+Separator].\:
+ *  see {Line Separator}[rdoc-ref:IO@Line+Separator]:
  *
  *    # Default separator.
  *    $ cat t.txt | ruby -e "p readlines"
-- 
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