fix(proxy): make metrics table MDX-compatible

[Svanvith]

Description

Make the proxy metrics table compatible with MDX processing in the documentation

Changes

• Replace <br> with self-closing <br /> tags in the affected metric rows
• Wrap HTTP status comparisons in inline code to prevent MDX from interpreting <= as JSX
• Keep all metric names and descriptions unchanged

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

🟢 Coverage ∅ diff coverage · +0.01% coverage variation

Metric	Results
Coverage variation	✅ +0.01% coverage variation (-1.00%)
Diff coverage	✅ ∅ diff coverage

View coverage diff in Codacy

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (b598820)	91151	22412	24.59%
Head commit (221034f)	91151 (+0)	22422 (+10)	24.60% (+0.01%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#3680)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[pbleser-oc]

Thanks, will try to keep those formatting quirks in mind in the future.