docs: Update documented string_id for zulipinternal realm.
docs: Update documented string_id for zulipinternal realm.

See 9b2b24c6176e49fbd49207ae43fd3c673df4eaa9 for the update of the
string_id.

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