Fix diff-friendly formatting #1107

Job	Run time
Build docs	19s
Check minimal versions	34s
Test (macOS)	2m 0s
Examples	2m 59s
MSRV	0s
Test (nightly)	2m 50s
Test (stable)	3m 8s
Test (beta)	2m 56s
Test (Windows)	3m 43s
Test (native-tls)	2m 46s
Test (no default features)	32s
Test (no cache)	2m 58s
Test (no gateway)	1m 43s
Test (unstable Discord API features)	3m 23s
Test (simd-json)	3m 18s
Test (chrono, chrono)	34s
Test (unstable API + typesize, default unstable_discord_api typesize, true)	58s
Test (builder without model, builder, true)	18s
Test (unstable Discord API (no default features), unstable_discord_api, true)	19s
	35m 18s

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