docs: Add missing port to url #4793

Job	Run time
mypy	1m 2s
slotscheck	23s
pyright	38s
validate	17s
Test server integration (uvicorn<0.27.0)	39s
Test server integration (uvicorn>=0.27.0)	37s
Test Minimal Application with Base Dependencies	14s
Test Minimal Pydantic 1 application	16s
test-platform-compat	0s
test (3.10) / test	1m 46s
test (3.11) / test	1m 38s
test (3.12) / test	3m 11s
test (3.13) / test	1m 59s
test (3.8) / test	2m 45s
test (3.9) / test	2m 2s
build-docs	2m 2s
codeql	2m 9s
upload-test-coverage	16s
sonar	0s
	21m 54s

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