chore(github): Improve PR template "document later" checkbox description #5202

Job	Run time
build-acvm-js	2m 17s
build-nargo	6m 21s
build-noirc-abi	2m 23s
build-noir-wasm	4m 34s
ACVM JS (Node.js)	33s
ACVM JS (Browser)	1m 16s
noir-js-backend-barretenberg	47s
noirc_abi	52s
Integration Tests (Node)	3m 37s
noir_codegen	1m 3s
Noir JS	1m 23s
Integration Tests (Browser)	5m 8s
noir_wasm	1m 5s
End	1s
	31m 20s

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