Update eligibility-signposting-api.yaml

Included application restricted as supported and removed this is not currently support text

Example RSV 5000000025 - Added DateOfLastVaccination and corrected dates

Example RSV 5000000026 - Corrected DateOfLastVaccination to align with ruleText

Example COVID 5000000106 - Corrected DateOfLastVaccination to align with ruleText

Example COVID 5000000110 - Added DateOfLastVaccination, amended ruleText and corrected DateOfNextEarliestVaccination

Author: jhadfield-NHS