docs: Remove build warning.
docs: Remove build warning.

Temporary workaround to remove multiple
"UserWarning: Container node skipped: type=document"
caused by upstream bug readthedocs/recommonmark#177.

Addresses #13263.

brainwane/zulip,showell/zulip,eeshangarg/zulip,timabbott/zulip,brainwane/zulip,hackerkid/zulip,andersk/zulip,brainwane/zulip,zulip/zulip,timabbott/zulip,timabbott/zulip,zulip/zulip,andersk/zulip,rht/zulip,rht/zulip,timabbott/zulip,hackerkid/zulip,showell/zulip,synicalsyntax/zulip,kou/zulip,punchagan/zulip,shubhamdhama/zulip,hackerkid/zulip,andersk/zulip,andersk/zulip,brainwane/zulip,punchagan/zulip,zulip/zulip,andersk/zulip,punchagan/zulip,rht/zulip,rht/zulip,punchagan/zulip,rht/zulip,shubhamdhama/zulip,kou/zulip,showell/zulip,rht/zulip,timabbott/zulip,eeshangarg/zulip,punchagan/zulip,rht/zulip,synicalsyntax/zulip,brainwane/zulip,synicalsyntax/zulip,showell/zulip,shubhamdhama/zulip,eeshangarg/zulip,timabbott/zulip,brainwane/zulip,synicalsyntax/zulip,andersk/zulip,showell/zulip,hackerkid/zulip,showell/zulip,shubhamdhama/zulip,zulip/zulip,showell/zulip,kou/zulip,shubhamdhama/zulip,synicalsyntax/zulip,punchagan/zulip,eeshangarg/zulip,zulip/zulip,brainwane/zulip,eeshangarg/zulip,kou/zulip,hackerkid/zulip,hackerkid/zulip,kou/zulip,andersk/zulip,eeshangarg/zulip,zulip/zulip,shubhamdhama/zulip,kou/zulip,kou/zulip,eeshangarg/zulip,timabbott/zulip,synicalsyntax/zulip,zulip/zulip,hackerkid/zulip,shubhamdhama/zulip,synicalsyntax/zulip,punchagan/zulip