Fix self-hosted installation instructions link #3535

Job	Run time
Test Crates	1m 52s
Test Postgres (13, rockylinux, 9, rockylinux-9-x86_64, false, true)	4m 7s
Test Postgres (13, centos, 7, centos-7-x86_64, false, true)	31s
Test Postgres (13, debian, 11, debian-11-amd64, true)	5m 1s
Test Postgres (14, rockylinux, 9, rockylinux-9-x86_64, false, true)	4m 17s
Test Postgres (14, centos, 7, centos-7-x86_64, false, true)	34s
Test Postgres (14, debian, 11, debian-11-amd64, true)	4m 43s
Test Postgres (15, rockylinux, 9, rockylinux-9-x86_64, false, true)	4m 9s
Test Postgres (15, centos, 7, centos-7-x86_64, false, true)	32s
Test Postgres (15, debian, 11, debian-11-amd64, true)	4m 40s
Test Postgres (16, rockylinux, 9, rockylinux-9-x86_64, false, true)	4m 8s
Test Postgres (16, debian, 11, debian-11-amd64, true)	4m 57s
Test Postgres (12, debian-11-amd64, debian, 11, 2.11.2)	4m 25s
	43m 56s

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