Copy-pasted transition info for Retired CT log state

[sciwhiz12]

Under the Retired heading on the log states/lifecycle page, the information for how a Retired log transitions to other log states is a direct copy-paste from the second point of the transition info for the ReadOnly log state.

CertificateTransparency/log_states.md

Lines 109 to 110 in cc113ef

	**How `Retired` CT Logs transition to other states:**
	* `ReadOnly` CT Logs transition to `Rejected` if all certificates contained therein are expired or if it is past the end of their certificate expiry range specified in their CT Log application. Notably, the `ReadOnly` to `Rejected` transition is not used as a more severe response to a CT Log’s compliance issues.