Fix protocol names #2222

Job	Run time
Check MSRV	1m 26s
Check formatting	11s
Lint macOS 64bit	5m 14s
Lint iOS 32bit	1m 32s
Lint GNUStep + exceptions	1m 40s
Lint header-translator	36s
Lint test-assembly	44s
Test macOS 12	6m 20s
Compiler UI	2m 0s
Assembly tests	1m 5s
Verify header translator output	1m 11s
Check icrate features	0s
Test Compiler-RT	27s
${{ matrix.name }}	0s
Test GNUStep with libobjc2 v1.9	1m 59s
Test GNUStep with libobjc2 v2.0	1m 45s
Test GNUStep with libobjc2 v2.1 on nightly	1m 43s
Test GNUStep 32bit	2m 1s
Test on iOS simulator w. dinghy	0s
	29m 54s

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