perlapi: Fix up to account for new utf8_to_uv functions

inline.h

@@ -1299,7 +1299,7 @@ Perl_utf8_to_bytes_overwrite(pTHX_ U8 **s_ptr, STRLEN *lenp)
 
 /*
 =for apidoc valid_utf8_to_uvchr
-Like C<L<perlapi/utf8_to_uvchr_buf>>, but should only be called when it is
+Like C<L<perlapi/utf8_to_uv>>, but should only be called when it is
 known that the next character in the input UTF-8 string C<s> is well-formed
 (I<e.g.>, it passes C<L<perlapi/isUTF8_CHAR>>.  Surrogates, non-character code
 points, and non-Unicode code points are allowed.

mathoms.c

@@ -181,15 +181,15 @@ Perl_uvuni_to_utf8(pTHX_ U8 *d, UV uv)
 =for apidoc_section $unicode
 =for apidoc utf8n_to_uvuni
 
-Instead use L<perlapi/utf8_to_uvchr_buf>, or rarely, L<perlapi/utf8n_to_uvchr>.
+Instead use L<perlapi/utf8_to_uv>, or rarely, L<perlapi/utf8_to_uv_flags>.
 
 This function was useful for code that wanted to handle both EBCDIC and
 ASCII platforms with Unicode properties, but starting in Perl v5.20, the
 distinctions between the platforms have mostly been made invisible to most
 code, so this function is quite unlikely to be what you want.  If you do need
-this precise functionality, use instead
-C<L<NATIVE_TO_UNI(utf8_to_uvchr_buf(...))|perlapi/utf8_to_uvchr_buf>>
-or C<L<NATIVE_TO_UNI(utf8n_to_uvchr(...))|perlapi/utf8n_to_uvchr>>.
+this precise functionality, use instead L<perlapi/C<utf8_to_uv>> or
+L<perlapi/C<utf8_to_uv_flags>> to calculate the native code point, and then
+convert to Unicode using L<perlapi/C<NATIVE_TO_UNI>>.
 
 =cut
 */

regen/regcharclass.pl

@@ -93,7 +93,7 @@ =head1 DESCRIPTION
 These forms should not be used I<except> on small sets of mostly widely
 separated code points; otherwise the code generated is inefficient.  For these
 cases, it is best to use the C<is_> forms, and then find the code point with
-C<utf8_to_uvchr_buf>().  This program can fail with a "deep recursion"
+L<perlapi/C<utf8_to_uv>>.  This program can fail with a "deep recursion"
 message on the worst of the inappropriate sets.  Examine the generated macro
 to see if it is acceptable.