[sphinx] Fixed warnings

4 jobs for arface in 51 minutes and 31 seconds
Status Name Job ID Coverage
  Build
passed build_linux_37 #241984
docker

00:51:31

64.0%
passed build_linux_38 #241985
docker

00:48:49

65.0%
passed build_macos_intel_37 #241982
macos intel

00:21:25

57.0%
passed build_macos_intel_38 #241983
macos intel

00:18:25

58.0%