string_replace_re added

doc/Doc.md

@@ -105,6 +105,7 @@
 |`(debug ..)`|||
 |`(display ..)`|||
 |`(string-replace source substr replacement)`|Replace a substring with a replacement string in a source string|`>>> (string-replace "abcdefg" "de" "DE") => "abcDEfg"`|
+|`(string-replace-re source substr replacement)`|Replace a substring regex with a replacement string in a source string|`>>> (string-replace-re "there is a subsequence in the string" "\\b(sub)([^ ]*)" "sub-$2") => "there is a sub-sequence in the string"`|
 |`(string-regex? where regex)`| Returns true if where contains regex|`>>> (string-regex? "aba123cdefg" "[0-9]+") => 1`|
 |`(string-pad str len char rpad_lpad)`|||
 |`(string-lpad str len char)`|Pad string from start with char to length len|`>>> (string-lpad "0" 10 "x")  => "xxxxxxxxx0"`|