[DOC] Fix typo in docs of IO: `#.` -> `$.`

2023-10-04 16:02:08 +02:00 · 2023-10-04 16:02:08 +02:00 · cd0b8d2441
--- a/io.c
+++ b/io.c
@ -15059,7 +15059,7 @@ set_LAST_READ_LINE(VALUE val, ID _x, VALUE *_y)
 *      # => 41
 *      f.close
 *
- *  - When a stream is read, <tt>#.</tt> is set to the line number for that stream:
+ *  - When a stream is read, <tt>$.</tt> is set to the line number for that stream:
 *
 *      f0 = File.new('t.txt')
 *      f1 = File.new('t.dat')