chore: fix name

[k1LoW]

SSIA.

[Copilot]

Pull Request Overview

This PR updates metric naming to capitalize "Pipeline" consistently across all pipeline-related metric names.

• Capitalizes "pipelines" to "Pipelines" and "pipeline" to "Pipeline" in metric name strings
• Affects four pipeline-related metrics to maintain consistent naming conventions

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[github-actions]

Code Metrics Report

	main (4160456)	#34 (82f3822)	+/-
Coverage	26.6%	26.6%	0.0%
Code to Test Ratio	1:1.3	1:1.3	0.0
Test Execution Time	7s	6s	-1s

Details

  |                     | main (4160456) | #34 (82f3822) | +/-  |
  |---------------------|----------------|---------------|------|
  | Coverage            |          26.6% |         26.6% | 0.0% |
  |   Files             |             12 |            12 |    0 |
  |   Lines             |            556 |           556 |    0 |
  |   Covered           |            148 |           148 |    0 |
  | Code to Test Ratio  |          1:1.3 |         1:1.3 |  0.0 |
  |   Code              |           1462 |          1462 |    0 |
  |   Test              |           1924 |          1924 |    0 |
+ | Test Execution Time |             7s |            6s |  -1s |

Code coverage of files in pull request scope (93.6% → 93.6%)

Files	Coverage	+/-	Status
tailor/metrics.go	93.6%	0.0%	modified

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Reported by octocov