wiki: add Android 15 as supported firmware version to a73xq

Change-Id: Ibe214f6abc285c067a2909598022e5b29d11dd7a

Author: Simon1511

_data/devices/a73xq.yml

@@ -1,6 +1,6 @@
 architecture: arm64
 battery: {capacity: 5000, removable: false, tech: 'Li-Po'}
-before_install: {instructions: 'needs_specific_android_fw', lineage_version: 20, version: '13/14'}
+before_install: {instructions: 'needs_specific_android_fw', lineage_version: 20, version: '13/14/15'}
 before_recovery_install: samsung_qcom
 bluetooth: {profiles: [A2DP], spec: '5'}
 cameras: