[doc] fixed external and internal links

Status Job ID Name Coverage
  Build
passed #168175
docker
build_linux_36

00:05:10

73.0%
passed #168257
macosx
build_macosx_36

00:05:33

73.0%
failed #168230
macosx
build_macosx_36

00:00:01

failed #168220
macosx
build_macosx_36

00:00:02

failed #168217
macosx
build_macosx_36

00:00:01

failed #168216
macosx
build_macosx_36

00:00:01

failed #168215
macosx
build_macosx_36

00:00:01

failed #168213
macosx
build_macosx_36

00:00:02

failed #168176
macosx
build_macosx_36

00:00:01