sphinx-doc: update 1.5.1 bottle for Linuxbrew.
sphinx-doc: update 1.5.1 bottle for Linuxbrew.

Closes Linuxbrew/homebrew-core#1609.
Signed-off-by: LinuxbrewTestBot <18b3417ba374eaf3ad4b67b014b8678aef44e242@linuxbrew.sh>

maxim-belkin/homebrew-core,rwhogg/homebrew-core,maxim-belkin/homebrew-core,Linuxbrew/homebrew-core,rwhogg/homebrew-core,LinuxbrewTestBot/homebrew-core,LinuxbrewTestBot/homebrew-core,Linuxbrew/homebrew-core