refactor: replace all git.io within the error message

[SukkaW]

All links on git.io will stop redirecting after April 29, 2022: https://github.blog/changelog/2022-04-25-git-io-deprecation/

Replace git.io within the error message with its original URL.

[github-actions]

File size impact

Merging replace-all-git-io-link into main will impact 5 files in 3 groups.

browser (2/2)

File	raw	gzip	brotli	Event
dist/s.min.js	+82 (7,713)	+24 (3,035)	+22 (2,748)	modified
dist/system.min.js	+82 (12,028)	+20 (4,628)	+14 (4,160)	modified
Total size impact	+164 (19,741)	+44 (7,663)	+36 (6,908)

node (1/1)

File	raw	gzip	brotli	Event
dist/system-node.cjs	+123 (519,998)	+9 (126,406)	+10 (84,342)	modified
Total size impact	+123 (519,998)	+9 (126,406)	+10 (84,342)

extras (2/8)

File	raw	gzip	brotli	Event
dist/extras/amd.min.js	+41 (1,157)	+19 (625)	+14 (543)	modified
dist/extras/transform.min.js	+41 (632)	+20 (390)	+35 (337)	modified
Total size impact	+82 (1,789)	+39 (1,015)	+49 (880)

_{Generated by file size impact during size-impact#2227464193}

[guybedford]

Thanks for the PR and brining this up!