Fix typo: diagostics - diagNostics #99302

Job	Run time
Test Suites - Linux (no-ble-no-shell-tsan-clang)	1h 43m 44s
Test Suites - Linux (no-ble-no-shell-tsan-clang)	1h 43m 44s
REPL Tests - Linux	1h 42m 56s
REPL Tests - Linux	1h 56m 50s
REPL Tests - Darwin	0s
REPL Tests - Darwin	0s
Test Suites - Darwin (no-ble-no-shell-asan-clang)	1h 24m 20s
Test Suites - Darwin (no-ble-no-shell-asan-clang)	1h 24m 20s
Test Suites - Darwin (no-ble-no-shell-tsan-clang)	1h 47m 56s
Test Suites - Darwin (no-ble-no-shell-tsan-clang)	1h 47m 56s
	13h 31m 46s

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