lint: Fix a new % format string that should be fstring.
lint: Fix a new % format string that should be fstring.

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