move the documentation of codePointAt and codePointCount to the string type instead of the int type

Author: erik-krogh

docs/codeql/ql-language-reference/ql-language-specification.rst

@@ -1993,10 +1993,6 @@ The following built-in predicates are members of type ``int``:
 +-------------------------+-------------+----------------+----------------------------------------------------------------------------------------------------------------+
 | ``toUnicode``           | string      |                | The result is the unicode character for the receiver seen as a unicode code point.                             |
 +-------------------------+-------------+----------------+----------------------------------------------------------------------------------------------------------------+
-| ``codePointAt``         | int         | int            | The result is the unicode code point at the index given by the argument.                                       |
-+-------------------------+-------------+----------------+----------------------------------------------------------------------------------------------------------------+
-| ``codePointCount``      | int         | int, int       | The result is the number of unicode code points in the receiver between the given indices.                     |
-+-------------------------+-------------+----------------+----------------------------------------------------------------------------------------------------------------+
 
 The leftmost bit after ``bitShiftRightSigned`` depends on sign extension, whereas after ``bitShiftRight`` it is zero.
 
@@ -2056,6 +2052,10 @@ The following built-in predicates are members of type ``string``:
 +----------------------+-------------+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 | ``trim``             | string      |                  | The result is the receiver with all whitespace removed from the beginning and end of the string.                                                                                                                                                                                                                                                                                       |
 +----------------------+-------------+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| ``codePointAt``      | int         | int              | The result is the unicode code point at the index given by the argument.                                                                                                                                                                                                                                                                                                               |
++----------------------+-------------+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+| ``codePointCount``   | int         | int, int         | The result is the number of unicode code points in the receiver between the given indices.                                                                                                                                                                                                                                                                                             |
++----------------------+-------------+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 
 Regular expressions are as defined by ``java.util.regex.Pattern`` in Java.
 For more information, see the `Java API Documentation <https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/regex/Pattern.html>`__.