chore: Fix broken fragment links from doc-split

[davsclaus]

Summary

• Fix broken <<anchor>> fragment links that referenced sections staying in parent pages after the CAMEL-23806 doc split
• ibm-watsonx-ai-examples.adoc: <<cos-connection-setup>> → xref to main component page
• salesforce-rest-api.adoc: <<apexCall>> → xref to main component page

Test plan

• Antora link checker passes (no more broken fragments)
• Build checks pass

Claude Code on behalf of Claus Ibsen

Co-Authored-By: Claude Opus 4.6 noreply@anthropic.com

[github-actions]

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[github-actions]

🧪 CI tested the following changed modules:

• components/camel-ibm/camel-ibm-watsonx-ai
• components/camel-salesforce/camel-salesforce-component

All tested modules (11 modules)

• Camel :: IBM :: watsonx.ai
• Camel :: JBang :: MCP
• Camel :: JBang :: Plugin :: Route Parser
• Camel :: JBang :: Plugin :: TUI
• Camel :: JBang :: Plugin :: Validate
• Camel :: Launcher :: Container
• Camel :: Salesforce
• Camel :: Salesforce :: CodeGen
• Camel :: Salesforce :: Maven Plugin
• Camel :: YAML DSL :: Validator
• Camel :: YAML DSL :: Validator Maven Plugin

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