.editorconfig: Fix invalid brace patterns.
.editorconfig: Fix invalid brace patterns.

editorconfig does not support brace patterns with only one
alternative.

Signed-off-by: Anders Kaseorg <dfdb7392591db597bc41cf266a9c3bc12a2706e5@zulipchat.com>

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