[DOC] update Integer#<< doc.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54783 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

bignum.c

@@ -6711,13 +6711,6 @@ rb_big_xor(VALUE x, VALUE y)
     return bignorm(z);
 }
 
-/*
- * call-seq:
- *     big << numeric   ->  integer
- *
- * Shifts big left _numeric_ positions (right if _numeric_ is negative).
- */
-
 VALUE
 rb_big_lshift(VALUE x, VALUE y)
 {

numeric.c

@@ -3963,9 +3963,9 @@ fix_lshift(long val, unsigned long width)
 
 /*
  * call-seq:
- *   fix << count  ->  integer
+ *   int << count  ->  integer
  *
- * Shifts +fix+ left +count+ positions, or right if +count+ is negative.
+ * Shifts +int+ left +count+ positions, or right if +count+ is negative.
  */
 
 static VALUE