The output of ``hyprctl submap -j`` returns a string contained within
curly braces e.g. ``{"default"}``. But this is not valid JSON as-per
RFC-7159, as an object must be a set of name/value pairs. As a result,
tools such as jq do not accept the current output. This patch is a
simple fix is to drop the braces and return the string describing the
current submap. The new JSON formatting is accepted by jq.
This would be a breaking change for anything which consumes the current
output of the submap command, but since parsers reject this (and since
the output is pretty simple to parse without using the -j flag) impact
might be more limited.
Signed-off-by: John Berg <john.berg.96bits@gmail.com>