https://git.ruby-lang.org/ruby.git/commit/?id=045ab1d056

From 045ab1d056e3babcb02e92f6d7e6426a936f2ca3 Mon Sep 17 00:00:00 2001
From: Koichi ITO <koic.ito@g...>
Date: Sun, 13 Feb 2022 12:17:18 +0900
Subject: [DOC] Fix a typo in `Integer#chr` example

The current example raises the following error.

```ruby
0..chr # => undefined local variable or method `chr' for main:Object (NameError)
```

This PR updates the example to produce the expected behavior.

```ruby
0.chr # => "\x00"
```
---
 numeric.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/numeric.c b/numeric.c
index 61f93c4f01..0e33c0f4ba 100644
--- a/numeric.c
+++ b/numeric.c
@@ -3775,7 +3775,7 @@ rb_enc_uint_chr(unsigned int code, rb_encoding *enc) https://github.com/ruby/ruby/blob/trunk/numeric.c#L3775
  *  represented by the value of +self+, according to the given +encoding+.
  *
  *    65.chr                   # => "A"
- *    0..chr                   # => "\x00"
+ *    0.chr                    # => "\x00"
  *    255.chr                  # => "\xFF"
  *    string = 255.chr(Encoding::UTF_8)
  *    string.encoding          # => Encoding::UTF_8
-- 
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