[BUGFIX release] Fix deprecation guide url #9274

Job	Run time
Type Checking (current version)	53s
Basic Test	1m 30s
Linting	1m 8s
Type Checking (other supported versions) (4.9)	1m 5s
Type Checking (other supported versions) (5.0)	58s
Type Checking (other supported versions) (5.1)	57s
Type Checking (other supported versions) (5.2)	1m 6s
Type Checking (other supported versions) (5.3)	1m 3s
Blueprint Tests	8m 17s
Browserstack Tests (Safari, Edge)	3m 45s
All deprecations enabled	1m 39s
Smoke tests (Full Ember Apps) (classic-basics)	1m 14s
All deprecations enabled, with optional features	1m 24s
Smoke tests (Full Ember Apps) (embroider-basics)	1m 18s
Deprecations as errors	1m 31s
Node.js Tests	50s
Browser Tests (Firefox)	1m 40s
Deprecations as errors, with optional features	1m 22s
Production build	1m 25s
Production build, with optional features	1m 24s
Extend prototypes	1m 30s
Extend prototypes, with optional features	1m 24s
Deploy tags to npm	0s
Notify Discord	0s
Publish channel to s3	0s
Publish alpha from default branch	0s
	37m 23s

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