Fix target name for DragonFly BSD #79

Job	Run time
lint	49s
cargo-deny (advisories)	19s
cargo-deny (bans licenses sources)	21s
msrv-aarch64-apple-darwin / build	34s
msrv-arm-linux-androideabi / build	39s
aarch64-apple-darwin / build	44s
aarch64-apple-ios / build	28s
aarch64-unknown-linux-gnu / build	42s
aarch64-unknown-linux-musl / build	50s
msrv-x86_64-pc-windows-msvc / build	49s
msrv-x86_64-unknown-freebsd / build	37s
msrv-x86_64-unknown-linux-gnu / build	43s
msrv-x86_64-unknown-netbsd / build	34s
aarch64-apple-darwin-nightly / build	28s
msrv-x86_64-unknown-linux-musl / build	1m 1s
arm-linux-androideabi / build	34s
armv7-linux-androideabi / build	24s
i686-pc-windows-gnu / build	2m 1s
i686-pc-windows-msvc / build	1m 15s
i686-unknown-linux-gnu / build	46s
i686-unknown-linux-musl / build	56s
x86_64-apple-darwin / build	39s
x86_64-pc-windows-gnu / build	1m 40s
x86_64-pc-windows-msvc / build	1m 26s
x86_64-unknown-freebsd / build	33s
x86_64-pc-windows-msvc-nightly / build	1m 13s
x86_64-unknown-linux-gnu / build	1m 17s
x86_64-unknown-linux-gnu-nightly / build	50s
x86_64-unknown-netbsd / build	24s
x86_64-unknown-linux-musl / build	59s
	24m 35s

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