docs: Correct the instructions for re-running provision.
docs: Correct the instructions for re-running provision.

We apparently missed this when renaming provision.py to simply
provision.

mahim97/zulip,showell/zulip,hackerkid/zulip,brockwhittaker/zulip,Galexrt/zulip,zulip/zulip,showell/zulip,hackerkid/zulip,shubhamdhama/zulip,synicalsyntax/zulip,rht/zulip,eeshangarg/zulip,hackerkid/zulip,dhcrzf/zulip,jackrzhang/zulip,brainwane/zulip,punchagan/zulip,brainwane/zulip,timabbott/zulip,jackrzhang/zulip,eeshangarg/zulip,brainwane/zulip,kou/zulip,eeshangarg/zulip,zulip/zulip,punchagan/zulip,rishig/zulip,synicalsyntax/zulip,jackrzhang/zulip,punchagan/zulip,rishig/zulip,dhcrzf/zulip,zulip/zulip,brainwane/zulip,synicalsyntax/zulip,tommyip/zulip,jackrzhang/zulip,rht/zulip,kou/zulip,dhcrzf/zulip,dhcrzf/zulip,dhcrzf/zulip,tommyip/zulip,rishig/zulip,kou/zulip,synicalsyntax/zulip,rishig/zulip,shubhamdhama/zulip,Galexrt/zulip,eeshangarg/zulip,zulip/zulip,shubhamdhama/zulip,Galexrt/zulip,punchagan/zulip,andersk/zulip,andersk/zulip,punchagan/zulip,zulip/zulip,eeshangarg/zulip,timabbott/zulip,jackrzhang/zulip,punchagan/zulip,timabbott/zulip,tommyip/zulip,dhcrzf/zulip,rishig/zulip,hackerkid/zulip,hackerkid/zulip,brockwhittaker/zulip,hackerkid/zulip,tommyip/zulip,kou/zulip,Galexrt/zulip,jackrzhang/zulip,andersk/zulip,mahim97/zulip,shubhamdhama/zulip,mahim97/zulip,kou/zulip,brainwane/zulip,brockwhittaker/zulip,punchagan/zulip,eeshangarg/zulip,synicalsyntax/zulip,andersk/zulip,brockwhittaker/zulip,shubhamdhama/zulip,mahim97/zulip,rht/zulip,rishig/zulip,mahim97/zulip,brockwhittaker/zulip,showell/zulip,tommyip/zulip,kou/zulip,eeshangarg/zulip,Galexrt/zulip,dhcrzf/zulip,andersk/zulip,showell/zulip,zulip/zulip,synicalsyntax/zulip,timabbott/zulip,mahim97/zulip,tommyip/zulip,timabbott/zulip,zulip/zulip,showell/zulip,andersk/zulip,jackrzhang/zulip,hackerkid/zulip,timabbott/zulip,rht/zulip,rht/zulip,brockwhittaker/zulip,brainwane/zulip,showell/zulip,Galexrt/zulip,showell/zulip,rishig/zulip,shubhamdhama/zulip,synicalsyntax/zulip,tommyip/zulip,brainwane/zulip,shubhamdhama/zulip,timabbott/zulip,rht/zulip,rht/zulip,kou/zulip,Galexrt/zulip,andersk/zulip