Fix error checking for CallTargetBubbleUpException #14335

	name: Verify docs/span_metadata.md is updated

	on:
	pull_request:
	workflow_dispatch:

	jobs:
	verify_span_metadata:
	runs-on: windows-latest

	steps:
	- name: Support longpaths
	run: git config --system core.longpaths true

	- name: Checkout
	uses: actions/checkout@v2

	- uses: actions/setup-dotnet@v1
	with:
	dotnet-version: '8.0.100'

	- name: "Regenerate docs/span_metadata.md"
	run: .\tracer\build.ps1 GenerateSpanDocumentation

	- name: "Verify no changes in docs/span_metadata.md"
	run: \|
	git diff --quiet -- .\docs\span_metadata.md
	if ($LASTEXITCODE -eq 1) {
	git diff -- .\docs\span_metadata.md
	Write-Error "Found changes in docs/span_metadata.md file. Run build task GenerateSpanDocumentation to regenerate the file with the latest C# rules."
	Exit 1
	} else {
	echo "No changes found to docs/span_metadata.md file"
	}

Provide feedback